Showing only posts in Ars Technica. Show all posts.

4 groups caught using the same Chrome and Windows exploit kit

Source

A nearly identical exploit kit that targets critical vulnerabilities in both Chromium-based browsers and older versions of Windows is being actively used by at least four hacking groups, some of which have ties to the Chinese government. Researchers from security firm Proofpoint said Wednesday that BlueMoon, the name they …

Four groups caught using the same Chrome and Windows exploit kit

Source

A nearly identical exploit kit that targets critical vulnerabilities in both Chromium-based browsers and older versions of Windows is being actively used by at least four hacking groups, some of which have ties to the Chinese government. Researchers from security firm Proofpoint said Wednesday that BlueMoon, the name they …

Why this month's Microsoft patch release is a doozy

Source

Microsoft’s patch for September is a doozy, with a record number of roughly 972 vulnerabilities fixed and 112 of them meeting the high critical-severity threshold. It was only two months ago that Microsoft patched a then-record 570 vulnerabilities. Then, last month, Microsoft patched some 620 of them. Google …

OpenAI agents discussed ways to escape their sandbox on public wiki

Source

Self-identifying OpenAI agents posted 18,000 messages to a public wiki that discussed ways for other agents to bypass security sandbox restrictions during what was likely internal testing designed to gauge the agents’ hacking abilities, researchers said Friday. In all, agents with 3,700 distinct self-given names posted the …

Once popular for attacking AI, ASCII smuggling is embraced by spammers

Source

A clever technique used to hide malicious prompts in attacks on AI agents has been adopted by spammers to evade filters on email platforms that are designed to flag unwanted messages used in mass campaigns. The technique is broadly known as ASCII smuggling. It gained attention two years ago …

Confused about which VPN is right, US senator asks the NSA for guidance

Source

A prominent US senator is asking the National Security Agency to provide guidance to the general public on best practices for using virtual private networks to secure their communications from spying by foreign adversaries. VPNs funnel all of a user’s Internet traffic through an encrypted connection to a …

I rented a car, and within hours, my driver's license was for sale

Source

Not long ago, I rented an SUV from a well-known car rental company. Within hours of an employee scanning my driver's license, a high-resolution scan of my ID was available for sale on the dark web. An exposé published Tuesday by KrebsOnSecurity reports that my license was one of …

BGP hijack infecting networks caused by a comedy of errors that’s not funny at all

Source

Hackers carried out a supply chain attack that installed malware on networks using an unusual technique: hijacking a chunk of Internet space where cloud management software used by hosting providers, data centers, and other large infrastructure companies is updated. In a well-coordinated operation, the unknown attackers exploited weaknesses in …

Think twice before installing this device promising free movies

Source

As online services get better at blocking malicious traffic, the attackers and scammers behind them have been forced to find new ways to reach their targets. The alternative of choice is now what are known as residential proxy networks. These systems funnel millions of home Internet connections into a …

Authorities arrest 2 alleged members of prolific hacking group TeamPCP

Source

Authorities in Australia said Wednesday that they arrested two men accused of participating in cybercrimes for TeamPCP, a prolific group of hackers that, over nine months, has carried out a relentless series of supply-chain attacks that infected more than 1,000 organizations worldwide. In a statement, the Australian Federal …

Claude, Codex, and Hermes installed unowned code inside corporate networks

Source

Documentation files on more than 100 websites are referencing potentially dangerous executable content that gets installed automatically when visited by many AI agents. A few dozen companies, some of them Fortune 500s, are among those that executed proof-of-concept code. At least one misconfigured site is directing visitors, human or …

How OpenAI let a mob of LLM agents game a test and ransack Hugging Face

Source

The OpenAI agents involved in last month’s incursion into Hugging Face were trained so heavily on winning a competition that they pursued a relentless campaign to cheat, a new report documented. In the process, and without authorization, they created an improvised message board to hatch a plan that …

Inaudible sounds used to fingerprint browsers catch AliExpress red-handed

Source

Chinese retailer AliExpress has been caught fingerprinting visitors after one of the metrics—an outdated technique that measures inaudible sounds it sends to browsers—impeded a researcher's ability to use his bluetooth headphones. Researcher Matthew Callaghan said he stumbled on the stealthy tracking by mistake. After loading the AliExpress …

Grok exfiltrates user data when malicious instructions are encrypted

Source

Earlier this week, researchers outlined an attack that used a secret input provided by Microsoft 365 Copilot for enterprise to cause the AI assistant to exfiltrate a password present in the user’s inbox. Now, a separate team has devised a similar attack against Grok. The new data theft …

Microsoft Copilot reveals secret input that allowed it to be hacked

Source

It’s not every day that attackers can force a frontier AI model to cough up user passwords and other sensitive data without user confirmation. That’s exactly what researchers recently did to Microsoft 365 Copilot for enterprise. Even more unusual is the source they tapped to discover the …

Vulnerability giving attackers full control of Macs is under active exploitation

Source

Dutch officials have warned that a high-severity macOS vulnerability that allows attackers to execute malicious code is under active exploitation. “The NCSC has received a notification indicating that active abuse of this vulnerability has been observed on multiple systems on which port 5900 was accessible from the Internet,” the …

Private security firms will soon be allowed to hack overseas cybercriminals

Source

The Trump administration is recruiting private security firms to conduct federal government-authorized operations, including cyberattacks, against overseas-based criminal organizations that commit hacks on US persons, organizations, or government entities. In a National Security Presidential Memorandum issued Thursday, US President Donald Trump directed the National Coordination Center (NCC), which operates …

Terabytes of credentials leaked in massive supply-chain attack

Source

Terabytes worth of credentials, many belonging to the world’s biggest and most sensitive organizations, have been exposed in a supply-chain attack on LiteLLM, an open source tool that streamlines AI-driven software development. Microsoft, Amazon, Cisco, Samsung, and Salesforce are only a handful of the entities whose access secrets …

Chrome adopts what may be the best protection yet against account takeovers

Source

Google’s Chrome browser has added a new feature that could go a long way in preventing a form of account takeover that’s grown increasingly common as users adopt two-factor authentication, passkeys, and similar protections. The new Chrome protection is known as device-bound session credentials (DBSCs). The measure …

New Pass-ta-key attack reveals all the things we didn't know about passkeys

Source

Last week, a researcher outlined what he said was a “novel attack surface” in passkeys, the new authentication paradigm that offers a more secure alternative to password-based methods. In fact, the attacks demonstrated in the post are neither novel nor unique to passkeys. This distinction is important because the …

Thousands of servers can be backdoored by exploiting buggy motherboard controllers

Source

Thousands of Internet-connected servers sold by the world’s biggest manufacturers can be remotely backdoored by exploiting critical vulnerabilities—some more than a decade old—that lurk deep inside system motherboards, according to research presented Wednesday. Baseboard management controllers are miniature computers that are embedded into the motherboards of …

Claude published malicious code to the Internet and attacked 3 real companies

Source

Anthropic said its Claude-based security models gained unauthorized access to the sensitive production environments of three outside organizations during internal testing designed to measure the models’ offensive cyber capabilities. The events, which Anthropic revealed Thursday, are the second revelation in 10 days that AI models from the world’s …

Max-severity Exchange server flaw under active exploitation by Kremlin hackers

Source

Russian state hackers are using a maximum-severity vulnerability in Microsoft Outlook’s Exchange Server to backdoor unpatched machines and steal credentials and other confidential information from them, security researchers said Thursday. The attacks are coming from TA488, a tracking name for a group working on behalf of the Kremlin …

page 1 | older articles »