Showing only posts tagged backdoors. Show all posts.

Backdoor in XZ Utils That Almost Happened

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Last week, the internet dodged a major nation-state attack that would have had catastrophic cybersecurity repercussions worldwide. It’s a catastrophe that didn’t happen, so it won’t get much attention—but it should. There’s an important moral to the story of the attack and its discovery …

xz Utils Backdoor

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The cybersecurity world got really lucky last week. An intentionally placed backdoor in xz Utils, an open-source compression utility, was pretty much accidentally discovered by a Microsoft engineer—weeks before it would have been incorporated into both Debian and Red Hat Linux. From ArsTehnica : Malicious code added to xz …

What we know about the xz Utils backdoor that almost infected the world

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Enlarge (credit: Getty Images) On Friday, a lone Microsoft developer rocked the world when he revealed a backdoor had been intentionally planted in xz Utils, an open source data compression utility available on almost all installations of Linux and other Unix-like operating systems. The person or people behind this …

Backdoor found in widely used Linux utility breaks encrypted SSH connections

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Enlarge / Internet Backdoor in a string of binary code in a shape of an eye. (credit: Getty Images) Researchers have found a malicious backdoor in a compression tool that made its way into widely used Linux distributions, including those from Red Hat and Debian. The compression utility, known as …

Backdoor found in widely used Linux utility targets encrypted SSH connections

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Enlarge / Internet Backdoor in a string of binary code in a shape of an eye. (credit: Getty Images) Researchers have found a malicious backdoor in a compression tool that made its way into widely used Linux distributions, including those from Red Hat and Debian. The compression utility, known as …

EU Court of Human Rights Rejects Encryption Backdoors

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The European Court of Human Rights has ruled that breaking end-to-end encryption by adding backdoors violates human rights : Seemingly most critically, the [Russian] government told the ECHR that any intrusion on private lives resulting from decrypting messages was “necessary” to combat terrorism in a democratic society. To back up …

New iPhone Exploit Uses Four Zero-Days

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Kaspersky researchers are detailing “an attack that over four years backdoored dozens if not thousands of iPhones, many of which belonged to employees of Moscow-based security firm Kaspersky.” It’s a zero-click exploit that makes use of four iPhone zero-days. The most intriguing new detail is the targeting of …

Backdoored firmware lets China state hackers control routers with “magic packets”

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Enlarge (credit: Getty Images) Hackers backed by the Chinese government are planting malware into routers that provides long-lasting and undetectable backdoor access to the networks of multinational companies in the US and Japan, governments in both countries said Wednesday. The hacking group, tracked under names including BlackTech, Palmerworm, Temp …

Signal Will Leave the UK Rather Than Add a Backdoor

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Totally expected, but still good to hear : Onstage at TechCrunch Disrupt 2023, Meredith Whittaker, the president of the Signal Foundation, which maintains the nonprofit Signal messaging app, reaffirmed that Signal would leave the U.K. if the country’s recently passed Online Safety Bill forced Signal to build “backdoors …

New Revelations from the Snowden Documents

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Jake Appelbaum’s PhD thesis contains several new revelations from the classified NSA documents provided to journalists by Edward Snowden. Nothing major, but a few more tidbits. Kind of amazing that that all happened ten years ago. At this point, those documents are more historical than anything else. And …

Microsoft Signing Key Stolen by Chinese

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A bunch of networks, including US Government networks, have been hacked by the Chinese. The hackers used forged authentication tokens to access user email, using a stolen Microsoft Azure account consumer signing key. Congress wants answers. The phrase “ negligent security practices ” is being tossed about—and with good reason …

Backdoor in TETRA Police Radios

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Seems that there is a deliberate backdoor in the twenty-year-old TErrestrial Trunked RAdio (TETRA) standard used by police forces around the world. The European Telecommunications Standards Institute (ETSI), an organization that standardizes technologies across the industry, first created TETRA in 1995. Since then, TETRA has been used in products …

Putting Undetectable Backdoors in Machine Learning Models

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This is really interesting research from a few months ago: Abstract: Given the computational cost and technical expertise required to train machine learning models, users may delegate the task of learning to a service provider. Delegation of learning has clear benefits, and at the same time raises serious concerns …

Manipulating Weights in Face-Recognition AI Systems

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Interesting research: “ Facial Misrecognition Systems: Simple Weight Manipulations Force DNNs to Err Only on Specific Persons “: Abstract: In this paper we describe how to plant novel types of backdoors in any facial recognition model based on the popular architecture of deep Siamese neural networks, by mathematically changing a small …

Trojaned Windows Installer Targets Ukraine

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Mandiant is reporting on a trojaned Windows installer that targets Ukrainian users. The installer was left on various torrent sites, presumably ensnaring people downloading pirated copies of the operating system: Mandiant uncovered a socially engineered supply chain operation focused on Ukrainian government entities that leveraged trojanized ISO files masquerading …

Inserting a Backdoor into a Machine-Learning System

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Interesting research: “ ImpNet: Imperceptible and blackbox-undetectable backdoors in compiled neural networks, by Tim Clifford, Ilia Shumailov, Yiren Zhao, Ross Anderson, and Robert Mullins: Abstract : Early backdoor attacks against machine learning set off an arms race in attack and defence development. Defences have since appeared demonstrating some ability to detect …

Supply chain attack used legitimate WordPress add-ons to backdoor sites

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Enlarge (credit: Getty Images) Dozens of legitimate WordPress add-ons downloaded from their original sources have been found backdoored through a supply chain attack, researchers said. The backdoor has been found on “quite a few” sites running the open source content management system. The backdoor gave the attackers full administrative …

Backdoor for Windows, macOS, and Linux went undetected until now

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Enlarge (credit: Jeremy Brooks / Flickr ) Researchers have uncovered a never-before-seen backdoor written from scratch for systems running Windows, macOS, or Linux that remained undetected by virtually all malware scanning engines. Researchers from security firm Intezer said they discovered SysJoker—the name they gave the backdoor—on the Linux-based Webserver …

Backdoor RAT for Windows, macOS, and Linux went undetected until now

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Enlarge (credit: Jeremy Brooks / Flickr ) Researchers have uncovered a never-before-seen backdoor malware written from scratch for systems running Windows, macOS, or Linux that remained undetected by virtually all malware scanning engines. Researchers from security firm Intezer said they discovered SysJoker—the name they gave the backdoor malware—on the …

Backdoor gives hackers complete control over federal agency network

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Enlarge (credit: Jeremy Brooks / Flickr ) A US federal agency has been hosting a backdoor that can provide total visibility into and complete control over the agency network, and the researchers who discovered it have been unable to engage with the administrators responsible, security firm Avast said on Thursday. The …

New German Government is Pro-Encryption and Anti-Backdoors

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I hope this is true: According to Jens Zimmermann, the German coalition negotiations had made it “quite clear” that the incoming government of the Social Democrats (SPD), the Greens and the business-friendly liberal FDP would reject “the weakening of encryption, which is being attempted under the guise of the …

Security Risks of Client-Side Scanning

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Even before Apple made its announcement, law enforcement shifted their battle for backdoors to client-side scanning. The idea is that they wouldn’t touch the cryptography, but instead eavesdrop on communications and systems before encryption or after decryption. It’s not a cryptographic backdoor, but it’s still a …

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