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‘Malicious Activity’ Hits the University of Cambridge’s Medical School

By Matt Burgess
Multiple university departments linked to the Clinical School Computing Service have been inaccessible for a month. The university has not revealed the nature of the “malicious activity.”

Binance’s Top Crypto Crime Investigator Is Being Detained in Nigeria

By Andy Greenberg
Tigran Gambaryan, a former crypto-focused US federal agent, and a second Binance executive, Nadeem Anjarwalla, have been held in Abuja without passports for two weeks.

Remcos RAT Spreading Through Adult Games in New Attack Wave

By Newsroom
The remote access trojan (RAT) known as Remcos RAT has been found being propagated via webhards by disguising it as adult-themed games in South Korea. WebHard, short for web hard drive, is a popular online file storage system used to upload, download, and share files in the country. While webhards have been used in the past to deliver njRAT, UDP RAT, and DDoS botnet malware, the

Most Sophisticated iPhone Hack Ever Exploited Apple's Hidden Hardware Feature

By Newsroom
The Operation Triangulation spyware attacks targeting Apple iOS devices leveraged never-before-seen exploits that made it possible to even bypass pivotal hardware-based security protections erected by the company. Russian cybersecurity firm Kaspersky, which discovered the campaign at the beginning of 2023 after becoming one of the targets, described it as

This Clever New Idea Could Fix AirTag Stalking While Maximizing Privacy

By Lily Hay Newman
Apple updated its location-tracking system in an attempt to cut down on AirTag abuse while still preserving privacy. Researchers think they’ve found a better balance.

Collide+Power, Downfall, and Inception: New Side-Channel Attacks Affecting Modern CPUs

By THN
Cybersecurity researchers have disclosed details of a trio of side-channel attacks that could be exploited to leak sensitive data from modern CPUs. Called Collide+Power (CVE-2023-20583), Downfall (CVE-2022-40982), and Inception (CVE-2023-20569), the novel methods follow the disclosure of another newly discovered security vulnerability affecting AMD's Zen 2 architecture-based processors known as 

Zenbleed: New Flaw in AMD Zen 2 Processors Puts Encryption Keys and Passwords at Risk

By THN
A new security vulnerability has been discovered in AMD's Zen 2 architecture-based processors that could be exploited to extract sensitive data such as encryption keys and passwords. Discovered by Google Project Zero researcher Tavis Ormandy, the flaw – codenamed Zenbleed and tracked as CVE-2023-20593 (CVSS score: 6.5) – allows data exfiltration at the rate of 30 kb per core, per second. The

How Your Real Flight Reservation Can Be Used to Scam You

By Ax Sharma
Scammers use a booking technicality, traveler confusion, and promises of dirt-cheap tickets to offer hot deals that are anything but.

China Bans U.S. Chip Giant Micron, Citing "Serious Cybersecurity Problems"

By Ravie Lakshmanan
China has banned U.S. chip maker Micron from selling its products to Chinese companies working on key infrastructure projects, citing national security risks. The development comes nearly two months after the country's cybersecurity authority initiated a probe in late March 2023 to assess potential network security risks. "The purpose of this network security review of Micron's products is to

Feds Take Down 13 More DDoS-for-Hire Services

By BrianKrebs

The U.S. Federal Bureau of Investigation (FBI) this week seized 13 domain names connected to “booter” services that let paying customers launch crippling distributed denial-of-service (DDoS) attacks. Ten of the domains are reincarnations of DDoS-for-hire services the FBI seized in December 2022, when it charged six U.S. men with computer crimes for allegedly operating booters.

Booter services are advertised through a variety of methods, including Dark Web forums, chat platforms and even youtube.com. They accept payment via PayPal, Google Wallet, and/or cryptocurrencies, and subscriptions can range in price from just a few dollars to several hundred per month. The services are generally priced according to the volume of traffic to be hurled at the target, the duration of each attack, and the number of concurrent attacks allowed.

The websites that saw their homepages replaced with seizure notices from the FBI this week include booter services like cyberstress[.]org and exoticbooter[.]com, which the feds say were used to launch millions of attacks against millions of victims.

“School districts, universities, financial institutions and government websites are among the victims who have been targeted in attacks launched by booter services,” federal prosecutors in Los Angeles said in a statement.

Purveyors of booters or “stressers” claim they are not responsible for how customers use their services, and that they aren’t breaking the law because — like most security tools — these services can be used for good or bad purposes. Most booter sites employ wordy “terms of use” agreements that require customers to agree they will only stress-test their own networks — and that they won’t use the service to attack others.

But the DOJ says these disclaimers usually ignore the fact that most booter services are heavily reliant on constantly scanning the Internet to commandeer misconfigured devices that are critical for maximizing the size and impact of DDoS attacks. What’s more, none of the services seized by the government required users to demonstrate that they own the Internet addresses being stress-tested, something a legitimate testing service would insist upon.

This is the third in a series of U.S. and international law enforcement actions targeting booter services. In December 2022, the feds seized four-dozen booter domains and charged six U.S. men with computer crimes related to their alleged ownership of the popular DDoS-for-hire services. In December 2018, the feds targeted 15 booter sites, and three booter store defendants who later pleaded guilty.

While the FBI’s repeated seizing of booter domains may seem like an endless game of virtual Whac-a-Mole, continuously taking these services offline imposes high enough costs for the operators that some of them will quit the business altogether, says Richard Clayton, director of Cambridge University’s Cybercrime Centre.

In 2020, Clayton and others published “Cybercrime is Mostly Boring,” an academic study on the quality and types of work needed to build, maintain and defend illicit enterprises that make up a large portion of the cybercrime-as-a-service market. The study found that operating a booter service effectively requires a mind-numbing amount of constant, tedious work that tends to produce high burnout rates for booter service operators — even when the service is operating efficiently and profitably.

For example, running an effective booter service requires a substantial amount of administrative work and maintenance, much of which involves constantly scanning for, commandeering and managing large collections of remote systems that can be used to amplify online attacks, Clayton said. On top of that, building brand recognition and customer loyalty takes time.

“If you’re running a booter and someone keeps taking your domain or hosting away, you have to then go through doing the same boring work all over again,” Clayton told KrebsOnSecurity. “One of the guys the FBI arrested in December [2022] spent six months moaning that he lost his servers, and could people please lend him some money to get it started again.”

In a statement released Wednesday, prosecutors in Los Angeles said four of the six men charged last year for running booter services have since pleaded guilty. However, at least one of the defendants from the 2022 booter bust-up — John M. Dobbs, 32, of Honolulu, HI — has pleaded not guilty and is signaling he intends to take his case to trial.

The FBI seizure notice that replaced the homepages of several booter services this week.

Dobbs is a computer science graduate student who for the past decade openly ran IPStresser[.]com, a popular and powerful attack-for-hire service that he registered with the state of Hawaii using his real name and address. Likewise, the domain was registered in Dobbs’s name and hometown in Pennsylvania. Prosecutors say Dobbs’ service attracted more than two million registered users, and was responsible for launching a staggering 30 million distinct DDoS attacks.

Many accused stresser site operators have pleaded guilty over the years after being hit with federal criminal charges. But the government’s core claim — that operating a booter site is a violation of U.S. computer crime laws — wasn’t properly tested in the courts until September 2021.

That was when a jury handed down a guilty verdict against Matthew Gatrel, a then 32-year-old St. Charles, Ill. man charged in the government’s first 2018 mass booter bust-up. Despite admitting to FBI agents that he ran two booter services (and turning over plenty of incriminating evidence in the process), Gatrel opted to take his case to trial, defended the entire time by court-appointed attorneys.

Gatrel was convicted on all three charges of violating the Computer Fraud and Abuse Act, including conspiracy to commit unauthorized impairment of a protected computer, conspiracy to commit wire fraud, and unauthorized impairment of a protected computer. He was sentenced to two years in prison.

A copy of the FBI’s booter seizure warrant is here (PDF). According to the DOJ, the defendants who pleaded guilty to operating booter sites include:

Jeremiah Sam Evans Miller, aka “John The Dev,” 23, of San Antonio, Texas, who pleaded guilty on April 6 to conspiracy and violating the computer fraud and abuse act related to the operation of a booter service named RoyalStresser[.]com (formerly known as Supremesecurityteam[.]com);

Angel Manuel Colon Jr., aka “Anonghost720” and “Anonghost1337,” 37, of Belleview, Florida, who pleaded guilty on February 13 to conspiracy and violating the computer fraud and abuse act related to the operation of a booter service named SecurityTeam[.]io;

Shamar Shattock, 19, of Margate, Florida, who pleaded guilty on March 22 to conspiracy to violate the computer fraud and abuse act related to the operation of a booter service known as Astrostress[.]com;

Cory Anthony Palmer, 23, of Lauderhill, Florida, who pleaded guilty on February 16 to conspiracy to violate the computer fraud and abuse act related to the operation of a booter service known as Booter[.]sx.

All four defendants are scheduled to be sentenced this summer.

The booter domains seized by the FBI this week include:

cyberstress[.]org
exoticbooter[.]com
layerstress[.]net
orbitalstress[.]xyz
redstresser[.]io
silentstress[.]wtf
sunstresser[.]net
silent[.]to
mythicalstress[.]net
dreams-stresser[.]org
stresserbest[.]io
stresserus[.]io
quantum-stress[.]org

A Tiny Blog Took on Big Surveillance in China—and Won

By Amos Zeeberg
Digging through manuals for security cameras, a group of gearheads found sinister details and ignited a new battle in the US-China tech war.

Flaw in Diksha App Exposed the Data of Millions of Indian Students

By Vittoria Elliott, Dhruv Mehrotra
A mandatory app exposed the personal information of students and teachers across the country for over a year.

A Leak Details Apple's Secret Dirt on Corellium, a Trusted Security Startup

By Lorenzo Franceschi-Bicchierai
A 500-page document reviewed by WIRED shows that Corellium engaged with several controversial companies, including spyware maker NSO Group.

Over 1,800 Android and iOS Apps Found Leaking Hard-Coded AWS Credentials

By Ravie Lakshmanan
Researchers have identified 1,859 apps across Android and iOS containing hard-coded Amazon Web Services (AWS) credentials, posing a major security risk. "Over three-quarters (77%) of the apps contained valid AWS access tokens allowing access to private AWS cloud services," Symantec's Threat Hunter team, a part of Broadcom Software, said in a report shared with The Hacker News. Interestingly, a

Careless Errors in Hundreds of Apps Could Expose Troves of Data

By Lily Hay Newman
Researchers found that mobile applications contain keys that could provide access to both user information and private files from unconnected apps.

Scammers Sent Uber to Take Elderly Lady to the Bank

By BrianKrebs

Email scammers sent an Uber to the home of an 80-year-old woman who responded to a well-timed email scam, in a bid to make sure she went to the bank and wired money to the fraudsters.  In this case, the woman figured out she was being scammed before embarking for the bank, but her story is a chilling reminder of how far crooks will go these days to rip people off.

Travis Hardaway is a former music teacher turned app developer from Towson, Md. Hardaway said his mother last month replied to an email she received regarding an appliance installation from BestBuy/GeekSquad. Hardaway said the timing of the scam email couldn’t have been worse: His mom’s dishwasher had just died, and she’d paid to have a new one delivered and installed.

“I think that’s where she got confused, because she thought the email was about her dishwasher installation,” Hardaway told KrebsOnSecurity.

Hardaway said his mom initiated a call to the phone number listed in the phony BestBuy email, and that the scammers told her she owed $160 for the installation, which seemed right at the time. Then the scammers asked her to install remote administration software on her computer so that they could control the machine from afar and assist her in making the payment.

After she logged into her bank and savings accounts with scammers watching her screen, the fraudster on the phone claimed that instead of pulling $160 out of her account, they accidentally transferred $160,000 to her account. They said they they needed her help to make sure the money was “returned.”

“They took control of her screen and said they had accidentally transferred $160,000 into her account,” Hardaway said. “The person on the phone told her he was going to lose his job over this transfer error, that he didn’t know what to do. So they sent her some information about where to wire the money, and asked her to go to the bank. But she told them, ‘I don’t drive,’ and they told her, “No problem, we’re sending an Uber to come help you to the bank.'”

Hardaway said he was out of town when all this happened, and that thankfully his mom eventually grew exasperated and gave up trying to help the scammers.

“They told her they were sending an Uber to pick her up and that it was on its way,” Hardaway said. “I don’t know if the Uber ever got there. But my mom went over to the neighbor’s house and they saw it for what it was — a scam.”

Hardaway said he has since wiped her computer, reinstalled the operating system and changed her passwords. But he says the incident has left his mom rattled.

“She’s really second-guessing herself now,” Hardaway said. “She’s not computer-savvy, and just moved down here from Boston during COVID to be near us, but she’s living by herself and feeling isolated and vulnerable, and stuff like this doesn’t help.”

According to the Federal Bureau of Investigation (FBI), seniors are often targeted because they tend to be trusting and polite. More importantly, they also usually have financial savings, own a home, and have good credit—all of which make them attractive to scammers.

“Additionally, seniors may be less inclined to report fraud because they don’t know how, or they may be too ashamed of having been scammed,” the FBI warned in May. “They might also be concerned that their relatives will lose confidence in their abilities to manage their own financial affairs. And when an elderly victim does report a crime, they may be unable to supply detailed information to investigators.”

In 2021, more than 92,000 victims over the age of 60 reported losses of $1.7 billion to the FBI’s Internet Crime Complaint Center (IC3). The FBI says that represents a 74 percent increase in losses over losses reported in 2020.

The abuse of ride-sharing services to scam the elderly is not exactly new. Authorities in Tampa, Fla. say they’re investigating an incident from December 2021 where fraudsters who’d stolen $700,000 from elderly grandparents used Uber rides to pick up bundles of cash from their victims.

Atlassian Rolls Out Security Patch for Critical Confluence Vulnerability

By Ravie Lakshmanan
Atlassian has rolled out fixes to remediate a critical security vulnerability pertaining to the use of hard-coded credentials affecting the Questions For Confluence app for Confluence Server and Confluence Data Center. The flaw, tracked as CVE-2022-26138, arises when the app in question is enabled on either of two services, causing it to create a Confluence user account with the username "

New Hertzbleed Side Channel Attack Affects All Modern AMD and Intel CPUs

By Ravie Lakshmanan
A newly discovered security vulnerability in modern Intel and AMD processors could let remote attackers steal encryption keys via a power side channel attack. Dubbed Hertzbleed by a group of researchers from the University of Texas, the University of Illinois Urbana-Champaign, and the University of Washington, the issue is rooted in dynamic voltage and frequency scaling (DVFS), a power and

What is the Essential Eight (And Why Non-Aussies Should Care)

By The Hacker News
In 2017, The Australian Cyber Security Center (ACSC) published a set of mitigation strategies that were designed to help organizations to protect themselves against cyber security incidents. These strategies, which became known as the Essential Eight, are designed specifically for use on Windows networks, although variations of these strategies are commonly applied to other platforms. What is

MIT Researchers Discover New Flaw in Apple M1 CPUs That Can't Be Patched

By Ravie Lakshmanan
A novel hardware attack dubbed PACMAN has been demonstrated against Apple's M1 processor chipsets, potentially arming a malicious actor with the capability to gain arbitrary code execution on macOS systems. It leverages "speculative execution attacks to bypass an important memory protection mechanism, ARM Pointer Authentication, a security feature that is used to enforce pointer integrity," MIT
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