News

Providing Security Updates to Automobile Software

Auto manufacturers are just starting to realize the problems of supporting the software in older models:

Today’s phones are able to receive updates six to eight years after their purchase date. Samsung and Google provide Android OS updates and security updates for seven years. Apple halts servicing products seven years after they stop selling them.

That might not cut it in the auto world, where the average age of cars on US roads is only going up. A recent report found that cars and trucks just reached a new record average age of 12.6 years, up two months from 2023. That means the car software hitting the road today needs to work­—and maybe even improve—­beyond 2036. The average length of smartphone ownership is just 2.8 years.

I wrote about this in 2018, in Click Here to Kill Everything, talking about patching as a security mechanism:

This won’t work with more durable goods. We might buy a new DVR every 5 or 10 years, and a refrigerator every 25 years. We drive a car we buy today for a decade, sell it to someone else who drives it for another decade, and that person sells it to someone who ships it to a Third World country, where it’s resold yet again and driven for yet another decade or two. Go try to boot up a 1978 Commodore PET computer, or try to run that year’s VisiCalc, and see what happens; we simply don’t know how to maintain 40-year-old [consumer] software.

Consider a car company. It might sell a dozen different types of cars with a dozen different software builds each year. Even assuming that the software gets updated only every two years and the company supports the cars for only two decades, the company needs to maintain the capability to update 20 to 30 different software versions. (For a company like Bosch that supplies automotive parts for many different manufacturers, the number would be more like 200.) The expense and warehouse size for the test vehicles and associated equipment would be enormous. Alternatively, imagine if car companies announced that they would no longer support vehicles older than five, or ten, years. There would be serious environmental consequences.

We really don’t have a good solution here. Agile updates is how we maintain security in a world where new vulnerabilities arise all the time, and we don’t have the economic incentive to secure things properly from the start.

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New Research in Detecting AI-Generated Videos

The latest in what will be a continuing arms race between creating and detecting videos:

The new tool the research project is unleashing on deepfakes, called “MISLnet”, evolved from years of data derived from detecting fake images and video with tools that spot changes made to digital video or images. These may include the addition or movement of pixels between frames, manipulation of the speed of the clip, or the removal of frames.

Such tools work because a digital camera’s algorithmic processing creates relationships between pixel color values. Those relationships between values are very different in user-generated or images edited with apps like Photoshop.

But because AI-generated videos aren’t produced by a camera capturing a real scene or image, they don’t contain those telltale disparities between pixel values.

The Drexel team’s tools, including MISLnet, learn using a method called a constrained neural network, which can differentiate between normal and unusual values at the sub-pixel level of images or video clips, rather than searching for the common indicators of image manipulation like those mentioned above.

Research paper.

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Are Mobile Devices Less Secure than PCs?

Are smartphones less secure than PCs? The answer to that is, they’re different. They face different security threats. Yet they certainly share one thing in common — they both need protection.

So, what makes a smartphone unique when it comes to security? And how do you go about protecting it? We’ll cover both here.

Apps, spam texts, and other smartphone vulnerabilities

Several facts of life about smartphones set them apart when it comes to keeping your devices safer. A quick rundown looks like this:

First off, people keep lots of apps on their phones. Old ones, new ones, ones they practically forgot they had. The security issue that comes into play there is that any app on a phone is subject to vulnerabilities.

A vulnerability in just one of the dozens of apps on a phone can lead to problems. The adage of “the weakest link” applies here. The phone is only as secure as its least secure app. And that goes for the phone’s operating system as well.

Additionally, app permissions can also introduce risks. Apps often request access to different parts of your phone to work — such as when a messenger app asks for access to contacts and photos. In the case of malicious apps, they’ll ask for far more permissions than they need. A classic example involves the old “flashlight apps” that invasively asked for a wide swath of permissions. That gave the hackers all kinds of info on users, including things like location info. Today, the practice of malicious, permission-thirsty apps continues with wallpaper apps, utility apps, games, and more.

As for other malicious apps, sometimes people download them without knowing. This often happens when shopping in third-party app stores, yet it can happen in legit app stores as well — despite rigorous review processes from Apple and Google. Sometimes, hackers sneak them through the review process for approval. These apps might include spyware, ransomware, and other forms of malware.

Many people put their smartphones to personal and professional use.[i] That might mean the phone has access to corporate apps, networks, and data. If the phone gets compromised, those corporate assets might get compromised too. And it can work in the other direction. A corporate compromise might affect an employee’s smartphone.

More and more, our phones are our wallets. Digital wallets and payment apps have certainly gained popularity. They speed up checkout and make splitting meals with friends easy. That makes the prospect of a lost or stolen phone all the more serious. An unsecured phone in the hands of another is like forking over your wallet.

Lastly, spam texts. Unique to phones are the sketchy links that crop up in texting and messaging apps. These often lead to scam sites and other sites that spread malware.

With a good sense of what makes securing your smartphone unique, let’s look at several steps you can take to protect it.

How to protect your smartphone

  1. Update your phone’s apps and operating system

Keeping your phone’s apps and operating system up to date can greatly improve your security. Updates can fix vulnerabilities that hackers rely on to pull off their malware-based attacks. it’s another tried and true method of keeping yourself safer — and for keeping your phone running great too.

  1. Lock your phone

With all that you keep and conduct on your phone, a lock is a must. Whether you have a PIN, passcode, or facial recognition available, put it into play. The same goes for things like your payment, banking, and financial apps. Ensure you have them locked too.

  1. Avoid third-party app stores

As mentioned above, app stores have measures in place to review and vet apps that help ensure they’re safe and secure. Third-party sites might very well not, and they might intentionally host malicious apps as part of a front. Further, legitimate app stores are quick to remove malicious apps from their stores once discovered, making shopping there safer still.

  1. Review apps carefully

Check out the developer — have they published several other apps with many downloads and good reviews? A legit app typically has many reviews. In contrast, malicious apps might have only a handful of (phony) five-star reviews. Lastly, look for typos and poor grammar in both the app description and screenshots. They could be a sign that a hacker slapped the app together and quickly deployed it.

  1. Go with a strong recommendation.

Yet better than combing through user reviews yourself is getting a recommendation from a trusted source, like a well-known publication or app store editors themselves. In this case, much of the vetting work has been done for you by an established reviewer. A quick online search like “best fitness apps” or “best apps for travelers” should turn up articles from legitimate sites that can suggest good options and describe them in detail before you download.

  1. Keep an eye on app permissions

Another way hackers weasel their way into your device is by getting permissions to access things like your location, contacts, and photos — and they’ll use malicious apps to do it. If an app asks for way more than you bargained for, like a simple puzzle game that asks for access to your camera or microphone, it might be a scam. Delete the app.

  1. Learn how to remotely lock or erase your smartphone

So what happens if your phone ends up getting lost or stolen? A combination of device tracking, device locking, and remote erasing can help protect your phone and the data on it. Different device manufacturers have different ways of going about it, but the result is the same — you can prevent others from using your phone. You can even erase it if you’re truly worried that it’s gone for good. Apple provides iOS users with a step-by-step guide, and Google offers a guide for Android users as well.

  1. Protect your phone and block sketchy links

Comprehensive online protection software can secure your phone in the same ways that it secures your laptops and computers. Installing it can protect your privacy, and keep you safe from attacks on public Wi-Fi, just to name a few things it can do. Ours also includes Scam Protection that blocks sketchy links in texts, messages, and email before they do you any harm. And if you tap that link by mistake, Scam Protection still blocks it.

[i] https://www.statista.com/statistics/1147490/share-adults-use-personal-smartphone-business-activities-by-country/

 

The post Are Mobile Devices Less Secure than PCs? appeared first on McAfee Blog.

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