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Last week I was reminded once again that even among some of the most highly educated and technically capable people in the world, the fight against unwanted junk email remains fraught with anger and vitriol – often directed at those who are trying to stop it!

mailing list, run by technology luminary Prof. Dave Farber.

The message, from Farber himself, described his annoyance and anger with his residential broadband provider, Comcast, for making a change to their network that caused him to be unable to send email for a brief period of time.

As it turned out, Comcast had implemented a very common anti-spam technique called “port 25 blocking” which is designed to prevent miscreants from setting up spamming servers on residential Internet connections.

Port 25 is the default SMTP connection port and is the port through which most email software connects to an ISP’s sending server. By blocking connections on port 25 from residential connections – other than to the ISP’s approved mail relays – an ISP’s mail customers are usually unaffected while rogue email senders can’t get their mail delivered.

Port 25 blocks also have the added benefit of making it much more difficult for worms to propagate themselves via email, especially when the payload involves spewing more virus-laden email through a mail server surreptitiously installed on the victim’s computer.

Unfortunately, like many anti-spam measures, port blocking is not without costs. It’s a pretty ham-handed approach, blocking both legitimate and illegitimate mail connections. Indeed, sometimes those most directly harmed are the more sophisticated users who aren’t doing anything wrong.

Farber’s complaint on the Interesting People list unleashed a torrent of anger at ISPs like Comcast for blocking port 25 and doing other things that inconvenienced and infuriated power users.

As the moaning on the mailing list shows, the folks who end up as “collateral damage” in the spam wars are the more skilled and demanding users, many of whom may get their broadband connectivity from one vendor but use another ISP for their email or domain hosting.

Ironically, the “cure” for many geeks stymied by port 25 blocking is, naturally, to get geekier: configure your mail application to communicate on the more obscure port 587, use secure IP tunnels, use VPNs, and generally get more creative about circumventing the blocks.

One category of correspondent heard from loud and clear: home hobbyists who are trying to run their own mail servers at home. Port 25 blocks present a pretty huge challenge for those folks. Besides being a violation of most residential broadband service agreements, the only difference between a hobbyist running a home server and a spammer running a home-based spam-cannon is in the morality of the sysop.

Since no one has yet built a spam filter that weighs the darkness of your soul, only a blanket block on home-based mail servers is workable.

Hobbyists who are experimenting with servers at home in violation of usage agreements are difficult for me to get teary-eyed about. But I can sympathize with those who’ve found their email suddenly not working only to find that after hours, or even days, of looking for something broken come to discover that, as the old saying goes, “it’s a feature, not a bug.”

I’m not the least bit surprised by the anger expressed on the Interesting People mailing list at Comcast. Being a bit of a geek myself – ok, more than a bit – I hate it when service providers and vendors start pulling blocks out of the teetering Jenga Tower that is my personal technical infrastructure.

It was back in 1998 that Internet policy guru Prof. Lawrence Lessig got his own hard lesson in how anti-spam measures can force decent people to fiddle with their email configurations. In an opinion piece, he decried the fact that his and other universities were being blocked for spam-related problems.

As it turns out, his school was running an open email relay that allowed unauthenticated users to send mail – and spammers were making liberal use of it to deliver their junk.

What offended Lessig was not that spammers were abusing the network, but that anti-spam techniques were making his life more complicated… and then blaming the anti-spam effort.

Maybe I’m just too deeply steeped in anti-spam stuff, but I haven’t expected any Internet connection to support port 25 connections in the better part of a decade. Blocking port 25 has been a recommended security and anti-spam practice for at least that long, and anybody who is just now running into port 25 problems is, in my experience, pretty far behind the curve.

My greater concern is that today the simplest anti-spam measures can still create such anger, especially among the community of highly educated and technologically savvy individuals who are the core of the Interesting People mailing list.

If the first reaction of the industry’s best and brightest minds is to spew vitriol on network administrators who are (finally!) taking steps to secure their networks, the educational challenge facing today’s security professionals is as tremendous as ever.

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Foldable Smartphones: The Good, The Bad, The Caveats

I remember back in 2003 when the first Motorola RAZR phones were coming out. They were very thin, aesthetically pleasing, and more durable than the majority of flip phones on the market back in the day. These phones were promptly replaced with solid-bodied smartphones around the year 2007. These “smart” phones, ironically, brought us back to a time when screens were out in the open.

Why It Might Be a Good Idea

Having a “flip” smartphone might sound like some kind of frivolous novelty, but the concept itself has proven quite effective before smartphones ever appeared on the market. This happened for three important reasons:

A flip phone protects its screen. In case you drop your phone, the casing will take the brunt of the impact while the screen remains neatly tucked inside.

Flip phones tend to have a physical response for incoming calls. Swiping to the right does not provide as satisfying a response as actually opening the phone. Psychologically, this presents a satisfying tactile response to input.

Since the casing is always in contact with the outside world, you have less of a risk of accidental screen activation while walking. Wearing pants with thin pocket linings or having very sensitive screens can lead to phones detecting a touch when you don’t intend them to.

One more thing: Because we are applying this kind of design to a smartphone, its utility will also change. See, smartphones are currently limited to having screen sizes that can comfortably fit in your pocket. A flipping smartphone can double that size without presenting many more complications. So, if you implement this design, you’ll be able to have a phone that doubles as a tablet!

The Caveats

While it might actually be a decent idea to design smartphones that flip open (as opposed to using a solid body design), there are a few things that raise serious concerns. Let’s look at Samsung’s patent for a second. The idea here is that it’s not a traditional flip phone (with a hinge that rotates). Instead, we have a “foldable” phone with a flexible body and screen. Here are the possible caveats with that idea that stick out the most to me.

There will be more wear and tear on the flexible portion of the phone’s body. Hinges tend to remain intact and functional for longer than the lifespan of the device as a whole. Try bending a piece of flexible polymer a couple hundred thousand times. You’ll notice small tears in the material.

The phone itself will be at least twice as thick as a standard smartphone, since it is folding over itself.

Because the smartphone cannot use a hinge, it will have to constantly stretch and contract all the interior connections in its hardware. This could provide some serious issues after prolonged use.

You can’t design a smartphone to be very useful with a full-blown hinge, so that is out of the question; you’re kind of forced to use a flexible single body. That may be a bit troubling, but manufacturers tend to address these things as time passes, if not during the initial design phase.


As with any new technology, I offer words of caution before buying into it. But as long as manufacturers focus on the caveats discussed earlier, there is real potential in having a phone that could unfold into a fully-functional tablet. To some, this may represent a heartwarming throwback to the days when flip phones were all the rage. To others, there will be a sigh of relief as they will finally have access to a decent-sized tablet that they can stow in their pockets!

Miguel Leiva-Gomez

Miguel has been a business growth and technology expert for more than a decade and has written software for even longer. From his little castle in Romania, he presents cold and analytical perspectives to things that affect the tech world.

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Which Are Some Of The Good Books On The Internet Of Things (Iot)?

There are a few excellent books to read for you on IoT. If you want to stay current on the newest trends and technology in the Internet of Things (IoT), these are the best for you!

Each book on our list has a few benefits and can help you learn more about the different parts of IoT design and development. We are changing how we live and work due to the Internet of Things, a rapidly evolving technology. With so much potential, it’s important to research before deciding how to use and implement IoT technologies.

What Does The Internet Of Things (IoT) Mean?

The Internet of Things (IoT) is a system of networked hardware that enables information exchange and communication. IoT is a word used to indicate how interconnected various objects, including machines, buildings, and other objects, are. The Internet of Things has the potential to improve how we live and work by expanding connectivity and automation in our physical surroundings.

Top IoT Books To Add To Your Reading List For 2023

Internet of Things, The − How Smart TVs, Smart Cars, Smart Homes, and Smart Cities Are Changing the World By Miller Michael

“The Internet of Things (IoT) will connect “smart” homes, appliances, cars, offices, industries, cities, and more, not just people. Given that it has the potential to alter your life, you must be informed of what is about to happen. The best-selling author has now written the best introduction to the Internet of Things for every one of the books on fundamental technology in the globe. Michael Miller provides an example of how smart connected devices can help consumers execute activities more quickly and wisely. He also discusses the risks to your freedom, privacy, and life. IoT is coming; there is no question about that. Miller clarifies why you should care, demonstrates how to make the most of the current opportunities, and prepares you for the rapidly changing world.

Analytics for the Internet of Things (IoT) − Intelligent analytics for your intelligent devices By Andrew Minteer

The idea behind this book depicts a lot. It says getting value out of vast quantities of hardly understandable data is our difficult first task. Although the data must traverse a difficult route to reach the computers for analysis, insights can be gained by utilising tools for statistical modeling and visualization. You will learn about several analytical techniques for deriving value from IoT big data. The mechanisms for data production and network transmission mechanisms for IoT devices are then examined.

The Amazon Way on IoT − 10 Principles for Every Leader from the World’s Leading Internet of Things Strategies By John Rossman

The Fourth Industrial Revolution, by Professor Dr.-Ing. Klaus Schwab

According to Klaus Schwab, the founder and executive leader of the World Economic Forum, we are currently in the midst of the fourth industrial revolution. In terms of size, scope, and complexity, this revolution is unlike anything we’ve ever witnessed, characterized by a wide range of innovative technologies that integrate the physical, digital, and biological worlds. The changes are impacting every sector of the economy, every country, and even what it means to be a human.

Building the Internet of Things − Implement New Business Models, Disrupt Competitors, Transform Your Industry By Maciej Kranz

Building the Internet of Things can be a useful guide for corporate decision-makers on the front lines to maximise this most recent revolution. The extent, reach, and opportunity that the Internet of Things (IoT) offers today are explained in this book, which focuses on the commercial implications of IoT. It also outlines how business executives may use IoT to realize tangible corporate benefits. IoT is examined in the debate from a business, organizational, and strategy viewpoint, and application cases are provided to illustrate the ripple impacts of this most recent upheaval.


As you know that engineers all across the world will have new opportunities. This is because of the Internet of Things (IoT). Cyberspace security, data analytics, energy-saving methods, dependable networks, robust devices, and stable code are things that this technology will soon make possible. Technology is transforming our world as it grows more prevalent. We will need to interact with technology to conserve energy, learn more about our environment, and better care for our farms and animals. The books in the ed above will broaden your horizons, deepen your understanding, and open up previously unimaginable opportunities for you.

How To Uninstall Bad Drivers On Windows 11. Remove Bad Windows 11 Drivers.

If you are having issues with certain aspects of Windows 11, sound, display, graphics, USB, Bluetooth, etc. There’s a good chance you probably have some driver issues. Drivers are a super important part of the operating system and one that is prone to issues. So follow along as we show you several different ways to uninstall and reinstall drivers on Windows 11. Some of these methods you may have used while others will be new to you.

Related: How to fix Cannot remove Xbox Wireless Controller; Remove failed on Windows 11.

Drivers are some of the most important pieces of software on Windows operating systems and play an important role in keeping hardware and software working as intended. Problems with drivers are some of the most common ways people encounter issues with games, programs, apps, services, hardware etc. Old drivers cause issues, incompatible drivers cause issues and sometimes even new drivers cause issues. As a result, it is important to know how to deal with bad drivers.

The hardware/driver and the issue in question will determine the method you should use to uninstall and reinstall drivers. However, it can be a little tricky to know which method to use and when so we’ll be covering the best way to deal with bad drivers on Windows 11. However, you can use this same set of tools and methods on all devices and Windows operating systems. If you are having driver issues, it’s also a good idea to check for BIOS updates and make sure that you are using the latest BIOS version for your system.

How do you uninstall bad Graphics Drivers on Windows 11? Uninstall bad Graphics Drivers on Windows 11.

Bad graphics drivers can cause a ton of issues on Windows 11 and don’t just affect gaming. So it’s important to know how to uninstall and reinstall them correctly. Although you can uninstall your graphics drivers from Device manager and GeForce experience from Settings. You’re better off using DDU Display Driver Uninstaller to remove everything from your computer in a single process. One that removes everything, not just the core files.

Before you use DDU, make sure you have downloaded the latest graphics drivers from your computer or graphics card manufacturer’s website (usually the support page).

Once you have done this, disable your Internet connection and run DDU. Make sure that you enable the tick box next to Remove GeForce Experience (GFE) when it appears. This is important. Do the same for AMD software if you are using AMD graphics.

After a system restart, install the driver software and enable your internet connection again.

This will make sure that Windows doesn’t try to install a generic driver in the background.

After your drivers have been installed successfully, you can reinstall GeForce experience if you didn’t get a driver package with it included.

How do you uninstall and reinstall other bad drivers on Windows 11?

For all the other drivers on Windows 11 the process is nice and easy and a familiar one. However, there is a little twist that a lot of people don’t usually follow. And that is to make sure you are using the official drivers for your motherboard, PC manufacturer, or device manufacturer. Don’t always rely on Windows to get the drivers for you. Some generic drivers are problematic. For this process do the following.

Head on over to your computer/motherboard/device manufacturers website (the support page usually) and download the latest drivers for each of your devices. If they have an auto detect and install option this is also worth using.

If you choose the auto-detect option just follow the steps and it will detect and update all the drivers in your device properly.

However, if you are doing them individually I suggest downloading all of the ones you require.

Now disable your Internet connection and restart your computer. When it reboots, install the drivers you downloaded earlier. Once they have been installed you can re-enable your Internet connection and restart your computer one more time.

Following this process allows you to make sure that you beat the Windows Driver utility. If you don’t disable your Internet connection Windows is quick to install generic drivers, which don’t always work well.


Amazon Preps Kindle Smartphone To Battle Apple, Say Reports

We may still see a so-called “Kindle Phone” from Amazon before 2012 is out, according to a new report.

Talk of an Amazon phone has been circulating for some time, ever since the online retailer began selling smartphone apps for Android phones in early 2011. Citigroup analyst Mark Mahaney followed this in November with a claim based on checks with component suppliers in Asia that Amazon would produce a smartphone. Now, Bloomberg on Friday added to the “Kindle Phone” speculation with a report that Amazon is working with hardware maker Foxconn to create a new handset.

The latest report from Bloomberg is short on details about what Amazon’s purported Kindle Phone would look like. Previous claims said the device would run a Texas Instruments OMAP 4 ARM-based processor and be priced around $200. It’s unclear what display size would be on the rumored Kindle Phone.

Kindle Smartphone: Content King

The notion that Amazon would move into the smartphone business can hardly be considered a surprise. Amazon already has many of the pieces in place to offer a handset with a supporting app and entertainment content ecosystem. The online retailer has a wide selection of movie and television episodes available for rent or purchase, a massive e-book selection, and, of course, apps through the Appstore for Android. Add to that mix Amazon’s popular Prime membership that offers discounted shipping rates on chúng tôi purchases, free e-book loans, and free TV and movie streaming, and it’s pretty clear the only thing Amazon is missing is a handset.

The recent Bloomberg report doesn’t mention what operating system the device would run. Presumably, Amazon would adopt the same strategy with a phone it took with the Kindle Fire tablet. That is, take an open source version of Google’s Android mobile OS and redesign it to fit Amazon’s needs. The Kindle Fire firmware is based on a version of Android 2.3 (Gingerbread). Google in November released the source code for Android 4.0 Ice Cream Sandwich, so perhaps an Amazon phone would use this newer version of Android.

Forked Android Smartphone

If Amazon does offer a phone, the company will have to differentiate itself from the legions of Android phones, upcoming Windows Phones, and the iPhone. An Amazon phone may also have to contend with cheaply priced devices running Firefox OS, and perhaps new BlackBerry devices. One way Amazon could offer something unique is to again copy the Kindle Fire strategy and offer a Kindle phone that is simply an easy-to-use buying machine for Amazon content.

The problem, however, is that a phone is not as ideal for content consumption as a 7-inch tablet like the Fire. So another option would be for Amazon to offer unlocked and contract-free devices that could run on any compatible network. But for this to work in the U.S., where a rumored Kindle Phone would be virtually guaranteed to launch first, Amazon would have to offer cheap devices.

Few American mobile subscribers are interested in forking over upwards of $500 to $700 for a smartphone that will be outdated in less than three years, as Google found out with the Nexus One. But if Mahaney’s claim from November is correct, and Amazon plans on selling its device around $200, that just might be the right price point to start a contract-free revolution among U.S. smartphone users.

In addition to creating its own smartphone, Amazon is reportedly looking to buy up available wireless patents to protect itself from competitor lawsuits, a common practice among smartphone vendors.

Connect with Ian Paul (@ianpaul) on Twitter and Google+, and with Today@PCWorld on Twitter for the latest tech news and analysis.

It And End Users Differ On Spam Severity

While slightly more than half of end users say spam isn’t a problem,

nearly 80 percent of IT managers say it’s a problem that they’re

struggling with, according to a new study.

But despite their difference of opinion of the situation today, both end

users and IT managers say it’s a problem that will plague them for years

to come.

”They really don’t have a positive outlook about this,” says Chris

Miller, director of product management for Symantec, Inc., an

information security company based in Cupertino, Calif. ”In some ways,

it’s almost like being on the Titanic. The iceberg has been hit and the

crew is aware of all the impacts. The passengers up on the deck don’t see the damage below and don’t know all the implications, so they think it’s a little more under control. But everybody knows it’s going to be a long night and there’s a lot more icebergs ahead.”

The study, conducted by Insight Express for Symantec, shows that overall

end users are a lot less concerned about spam than their counterparts in

the IT department.

Slightly more than 50 percent of end users surveyed say spam is not a

problem in their workplace. However, 79.1 percent of IT managers say it

is a problem in the workplace.

When end users were asked if they think spam is under control at their

company, 8.4 percent say it’s out of control; 23.3 percent say it’s

barely under control, and 68 percent say it is under control.

Compare that to IT administrators who were asked the same question. A

similar 10 percent say it’s out of control; 33 percent say it’s barely

out of control, and 56 percent say they have it under control.

”End users are experiencing some degree of respite from the amount of

spam they are seeing,” says Miller. ”But the IT administrators are

basically getting the brunt of this problem. They’re not just dealing

with one person’s spam. They’re dealing with the spam that’s coming in

to everybody.

”They’re dealing with bandwidth usage, storage usage, viruses it may be

bringing in, staffing and the hours they have to put in,” adds Miller.

”They’re spending a lot of time with this problem. The end user sees it

as garbage they have to deal with. The IT manager has a lot of other


In fact, the survey shows that spam has become one of the top worries

for administrators.

When IT managers were asked what they spend the majority of their time

on, spam came in second only to malware. Miller says 42.7 percent of

managers report malware as their worst problem, and 16.4 percent say

it’s spam.

”For a lot of our customers, I’d say it’s a nightmare,” he adds.

And it appears to be a nightmare that isn’t going away anytime soon.

According to the survey, 70.9 percent of IT administrators say they’ll

still be wrestling with spam three years from now, while 72 percent of

users say it will only get worse.

”This is painting a pretty grim picture moving forward,” says Miller.

”They’re both seeing increases and they’re both seeing it as a

long-term problem.”

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