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Investigative journalist Kim Zetter explains that Stuxnet continues to serves as a precedent for attacks happening now

Katie Moussouris explains why simply having a bug bounty program isn’t enough to fix security problems

The UK Ministry of Defence is actively training staff to confront individuals that are engaged in risky behaviours

Researcher shows how Instagram and Facebook’s use of an in-app browser within both its iOS apps can track interactions with external websites.

The CISA has seen a resurgence of the malware targeting a range of verticals and critical infrastructure organizations by exploiting RDP, firewall vulnerabilities.

Twitter accidentally exposed the personal information—including phone numbers and email addresses—for 5.4 million accounts. And someone was trying to sell this information.

In January 2022, we received a report through our bug bounty program of a vulnerability in Twitter’s systems. As a result of the vulnerability, if someone submitted an email address or phone number to Twitter’s systems, Twitter’s systems would tell the person what Twitter account the submitted email addresses or phone number was associated with, if any. This bug resulted from an update to our code in June 2021. When we learned about this, we immediately investigated and fixed it. At that time, we had no evidence to suggest someone had taken advantage of the vulnerability.

In July 2022, we learned through a press report that someone had potentially leveraged this and was offering to sell the information they had compiled. After reviewing a sample of the available data for sale, we confirmed that a bad actor had taken advantage of the issue before it was addressed.

This includes anonymous accounts.

This comment has it right:

So after forcing users to enter a phone number to continue using twitter, despite twitter having no need to know the users phone number, they then leak the phone numbers and associated accounts. Great.

But it gets worse… After being told of the leak in January, rather than disclosing the fact millions of users data had been open for anyone who looked, they quietly fixed it and hoped nobody else had found it.

It was only when the press started to notice they finally disclosed the leak.

That isn’t just one bug causing a security leak—it’s a chain of bad decisions and bad security culture, and if anything should attract government fines for lax data security, this is it.

Twitter’s blog post unhelpfully goes on to say:

If you operate a pseudonymous Twitter account, we understand the risks an incident like this can introduce and deeply regret that this happened. To keep your identity as veiled as possible, we recommend not adding a publicly known phone number or email address to your Twitter account.

Three news articles.

I think the U is forced:

SQUID consists of five steps: Stop, Question, Understand, Imagine, and Decide.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

My personal definition of a brilliant idea is one that is immediately obvious once it’s explained, but no one has thought of it before. I can’t believe that no one has described this taxonomy of access control before Ittay Eyal laid it out in this paper. The paper is about cryptocurrency wallet design, but the ideas are more general. Ittay points out that a key—or an account, or anything similar—can be in one of four states:

safe Only the user has access,
loss No one has access,
leak Both the user and the adversary have access, or
theft Only the adversary has access.

Once you know these states, you can assign probabilities of transitioning from one state to another (someone hacks your account and locks you out, you forgot your own password, etc.) and then build optimal security and reliability to deal with it. It’s a truly elegant way of conceptualizing the problem.

The first day of school is right around the corner. The whole family is gearing up for a return to the routine: waking up to alarm clocks at dawn, rushed mornings, learning all day, and after-school activities and homework all night. 

Even though everyone is in a frenzied state, now is a great time to slow down and discuss important topics that may arise during the school year. Parents and guardians know their children are tech savvy, just by looking at their thumbs fly across keyboards; however, that doesn’t necessarily mean that they’re cyber-savvy. 

To make sure we’re all on the same page, here are our definitions of tech savvy and cyber savvy: 

• Tech savvy. Digital natives (millennials, Gen Z, and now Generation Alpha) often develop their tech savviness at a young age. For example, using touchscreens, sending electronic correspondences, and troubleshooting simple technical inconveniences and glitches are like second nature because they’ve been practicing it for so long, and often every day. 
• Cyber savvy. Cyber savviness extends beyond knowing how to use connected devices. It means knowing how to use them safely and how to intelligently dodge online hazards, know the best ways to protect devices from cybercriminals, how to guard online information, and how to spot the signs that a device or information may be compromised. 

According to McAfee research, children cited that their parents are best suited to teach them about being safe online when compared to their teachers and online resources. Here are common scenarios your child, tween, or teen will likely encounter during the school year, plus some tips and tools you can share to make sure they are safe online. 

Phishing 

It’s now common practice for school systems to communicate with students and their guardians over email, whether that’s through a school-issued email address or a personal one. Your student should know that phishers often impersonate institutions with authority, such as the IRS, banks, and in their case, a school. Put your children on alert to the most common signs of a cybercriminal phishing for valuable personally identifiable information (PII). These signs include: 

• Typos or poor grammar 
• Severe consequences for seemingly insignificant reasons 
• Requests for a response in a very short timeframe 
• Asking for information the school system should already have or for information they shouldn’t need. For example, schools have a record of their students’ Social Security Numbers, full names, and addresses, but they would never need to know account passwords. 

If your child ever receives a suspicious-looking or -sounding email, they should start an entirely new email chain with the supposed sender and confirm that they sent the message. Do not reply to the suspicious email and don’t click on any links within the message.  

An excellent nugget of wisdom you can impart is the following: Never divulge your Social Security Number over online channels and never give out passwords. If someone needs your SSN for official purposes, they can follow up in a method other than email. And no one ever needs to know your password. 

Social Media Engineering 

With a return to the school year routine comes a flood of back-to-school social media posts and catching up electronically with friends. If your child owns a social media profile (or several!), alert them to the various social media engineering tactics that are common to each platform. Similar to phishing schemes, social media scams are usually “time sensitive” and attempt to inspire strong emotions in readers, whether that’s excitement, fear, sadness, or anger. 

Alert your child that not everything they read on social media is true. Photos can be doctored and stories can be fabricated in order to prompt people to click on links to “donate” or “sign a petition.” You don’t have to discourage your child from taking a stand for causes they believe in; rather, urge them to follow up through official channels. For instance, if they see a social media post about contributing to save the rainforest, instead of donating through the post, contact a well-known organization, such as the World Wildlife Fund and inquire how to make a difference. 

School Device and BYOD Policies 

More and more school systems are entrusting school-issued connected devices to students to use in the classroom and to bring home. Other districts have BYOD (or bring your own device) policies where students can use personal family devices for school activities. In either case, device security is key to keeping their information safe and maintaining the integrity of the school system’s network. Families don’t want to be the weakest link in the school system and are responsible for a town-wide education network breach. 

Here are three ways to protect any device connected to the school network: 

1. Lock screen protection. Biometric security measures (like facial recognition or fingerprint scanning) and passcode-locked devices are key in the case of lost or stolen devices.  
2. Password managers. It can be a lot to ask of an adult to remember all their passwords. But expecting a young person to memorize unique and complicated passwords to all their accounts could lead to weak, reused passwords or poor password protection methods, such as writing them down. A password manager, like McAfee True Key, makes it so you only have to remember one password ever again! The software protects the rest. 
3. VPNs. VPNs (virtual private networks) are key to protecting your network when you’re surfing on free public Wi-Fi or on networks where you’re unsure of the extent of their protection. McAfee Secure VPN protects your network with bank-grade encryption, is fast and easy to use, and never tracks your online movements so you can be confident in your security and privacy. 

Gear Up for a Safe School Year 

These conversations are great to start at the dinner table or on long, boring car rides where you’re most likely to get your child’s undivided attention. Don’t focus so much on the fearful consequences or punishment that could result from poor cyberhabits. Instead, emphasize how easy these steps and tools are to use, so it would be silly not to follow or use them. 

The post Back to School: Tech Savvy vs. Cyber Savvy appeared first on McAfee Blog.

The Department of Homeland Security (DHS) is urging states and localities to beef up security around proprietary devices that connect to the Emergency Alert System — a national public warning system used to deliver important emergency information, such as severe weather and AMBER alerts. The DHS warning came in advance of a workshop to be held this weekend at the DEFCON security conference in Las Vegas, where a security researcher is slated to demonstrate multiple weaknesses in the nationwide alert system.

The DHS warning was prompted by security researcher Ken Pyle, a partner at security firm Cybir. Pyle said he started acquiring old EAS equipment off of eBay in 2019, and that he quickly identified a number of serious security vulnerabilities in a device that is broadly used by states and localities to encode and decode EAS alert signals.

“I found all kinds of problems back then, and reported it to the DHS, FBI and the manufacturer,” Pyle said in an interview with KrebsOnSecurity. “But nothing ever happened. I decided I wasn’t going to tell anyone about it yet because I wanted to give people time to fix it.”

Pyle said he took up the research again in earnest after an angry mob stormed the U.S. Capitol on Jan. 6, 2021.

“I was sitting there thinking, ‘Holy shit, someone could start a civil war with this thing,”’ Pyle recalled. “I went back to see if this was still a problem, and it turns out it’s still a very big problem. So I decided that unless someone actually makes this public and talks about it, clearly nothing is going to be done about it.”

The EAS encoder/decoder devices Pyle acquired were made by Lyndonville, NY-based Digital Alert Systems (formerly Monroe Electronics, Inc.), which issued a security advisory this month saying it released patches in 2019 to fix the flaws reported by Pyle, but that some customers are still running outdated versions of the device’s firmware. That may be because the patches were included in version 4 of the firmware for the EAS devices, and many older models apparently do not support the new software.

“The vulnerabilities identified present a potentially serious risk, and we believe both were addressed in software updates issued beginning Oct 2019,” EAS said in a written statement. “We also provided attribution for the researcher’s responsible disclosure, allowing us to rectify the matters before making any public statements. We are aware that some users have not taken corrective actions and updated their software and should immediately take action to update the latest software version to ensure they are not at risk. Anything lower than version 4.1 should be updated immediately. On July 20, 2022, the researcher referred to other potential issues, and we trust the researcher will provide more detail. We will evaluate and work to issue any necessary mitigations as quickly as possible.”

But Pyle said a great many EAS stakeholders are still ignoring basic advice from the manufacturer, such as changing default passwords and placing the devices behind a firewall, not directly exposing them to the Internet, and restricting access only to trusted hosts and networks.

Pyle said the biggest threat to the security of the EAS is that an attacker would only need to compromise a single EAS station to send out alerts locally that can be picked up by other EAS systems and retransmitted across the nation.

“The process for alerts is automated in most cases, hence, obtaining access to a device will allow you to pivot around,” he said. “There’s no centralized control of the EAS because these devices are designed such that someone locally can issue an alert, but there’s no central control over whether I am the one person who can send or whatever. If you are a local operator, you can send out nationwide alerts. That’s how easy it is to do this.”

One of the Digital Alert Systems devices Pyle sourced from an electronics recycler earlier this year was non-functioning, but whoever discarded it neglected to wipe the hard drive embedded in the machine. Pyle soon discovered the device contained the private cryptographic keys and other credentials needed to send alerts through Comcast, the nation’s third-largest cable company.

“I can issue and create my own alert here, which has all the valid checks or whatever for being a real alert station,” Pyle said in an interview earlier this month. “I can create a message that will start propagating through the EAS.”

Comcast told KrebsOnSecurity that “a third-party device used to deliver EAS alerts was lost in transit by a trusted shipping provider between two Comcast locations and subsequently obtained by a cybersecurity researcher.

“We’ve conducted a thorough investigation of this matter and have determined that no customer data, and no sensitive Comcast data, were compromised,” Comcast spokesperson David McGuire said.

The company said it also confirmed that the information included on the device can no longer be used to send false messages to Comcast customers or used to compromise devices within Comcast’s network, including EAS devices.

“We are taking steps to further ensure secure transfer of such devices going forward,” McGuire said. “Separately, we have conducted a thorough audit of all EAS devices on our network and confirmed that they are updated with currently available patches and are therefore not vulnerable to recently reported security issues. We’re grateful for the responsible disclosure and to the security research community for continuing to engage and share information with our teams to make our products and technologies ever more secure. Mr. Pyle informed us promptly of his research and worked with us as we took steps to validate his findings and ensure the security of our systems.”

Unauthorized EAS broadcast alerts have happened enough that there is a chronicle of EAS compromises over at fandom.com. Thankfully, most of these incidents have involved fairly obvious hoaxes.

According to the EAS wiki, in February 2013, hackers broke into the EAS networks in Great Falls, Mt. and Marquette, Mich. to broadcast an alert that zombies had risen from their graves in several counties. In Feb. 2017, an EAS station in Indiana also was hacked, with the intruders playing the same “zombies and dead bodies” audio from the 2013 incidents.

“On February 20 and February 21, 2020, Wave Broadband’s EASyCAP equipment was hacked due to the equipment’s default password not being changed,” the Wiki states. “Four alerts were broadcasted, two of which consisted of a Radiological Hazard Warning and a Required Monthly Test playing parts of the Hip Hop song Hot by artist Young Thug.”

In January 2018, Hawaii sent out an alert to cell phones, televisions and radios, warning everyone in the state that a missile was headed their way. It took 38 minutes for Hawaii to let people know the alert was a misfire, and that a draft alert was inadvertently sent. The news video clip below about the 2018 event in Hawaii does a good job of walking through how the EAS works.