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Cisco has warned that a new vulnerability impacting Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software has been exploited in the wild. The high-severity flaw, tracked as CVE-2026-20349 (CVSS score: 8.6), is a case of insufficient error checking when processing HTTP requests that could allow an unauthenticated, remote attacker to trigger Ravie Lakshmananhttp://www.blogger.com/profile/[email protected]

Také procesory Intelu jsou nyní dostupné za výhodnější ceny, byť se citelnější ceny dotkly pouze dvojice modelů refreshe poslední generace, tzv. plusových modelů…

Sny o designu GNOME Shellu, článek s náhledy a videi, představuje dlouhodobou vizi týmu GNOME pro vylepšení uživatelského rozhraní GNOME Shellu. Zatímco nedávné verze přinášely spíše drobné úpravy, designéři nyní plánují zásadnější změny.

Byla vydána nová verze 10.5 sady aplikací pro SSH komunikaci OpenSSH. Přináší řadu důležitých bezpečnostních oprav, vylepšení funkcí a oprav chyb. Nově vyžaduje podporu ECC (Elliptic Curve Cryptography) v libcrypto, včetně křivky NISTP521.

Byla vydána nová verze 10.6 z Debianu vycházející linuxové distribuce DietPi pro (nejenom) jednodeskové počítače. S novými obrazy pro Orange Pi 4 Pro, Orange Pi Zero 3W a Odroid M1/M1S/M2. Přehled novinek v poznámkách k vydání.

Google says Chrome's anti-abuse systems reduced unwanted notifications on Android by more than 7 billion per day during the first quarter of 2026. [...]

On Monday, passengers aboard Delta flight 591 going from Las Vegas to Atlanta allegedly spoofed the onboard Wi-Fi, raising the attention of federal law enforcement.

The incident came one day after the DEF CON security conference concluded in Las Vegas and was first described on social media accounts that follow publicly available air-to-ground messages, known as ACARS.

According to the “ACARS Drama” account, a message sent by pilots from the plane stated: “NO INFO AS OF NOW WE HAVE A BUNCH OF PAX THAT WERE AT A CYBER CONFERENCE IN LAS THEY WERE ABLE TO JAM OUR WIFI AND BROADCAST THEIR SIGNAL.”

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The DeadLock ransomware operation is using a decentralized infrastructure that relies on blockchain-backed services to protect its communication with victims and data-leak activity. [...]

Pokud člověk invalidní ve III. stupni pracuje, má při pracovní neschopnosti nárok na nemocenskou. Oproti ostatním zaměstnancům ji ale smí pobírat výrazně kratší dobu.

Sonda do světa otevřeného softwaru. Dnes si zobrazíme informace o přehrávané hudbě v panelu GNOME, vytvoříme hudbu pomocí kódu, vyzkoušíme webový nástroj pro správu databází a nastavíme si tapetu na pozadí.

Ceny vybraných procesorů Ryzen na prodejním portálu Amazon významně klesly. Výhodněji lze pořídit zejména modely posledních dvou generací vybavené V-Cache…

Ať chceme nebo ne, v digitálním světě se stávají měřítkem vlivu lajky, sdílení a stažení, i pokud jde o odborné publikace. Tým Cornell University dokázal předpovídat budoucí úspěch a vliv inovací na základě online zájmu, a to až pět let dopředu. Zítřek vědy a technologií momentálně určují lajky a downloady.

…aneb Kdo si opravdu zaslouží proslulou přezdívku T. rex?

Experimentální maglev v laboratoři Donghu zlomil třetí světový rekord za šest měsíců. Zařízení o hmotnosti 1,11 tuny na trati dlouhé 1 kilometr zrychlilo z nuly na 799 km/h za pouhých 5,3 sekundy. Přeprava cestujících takovou rychlostí ještě není na pořadu dne, ale mohl by z toho být třeba elektromagnetický katapult.

Signal has introduced a new layer of security to help make sure no one has secretly interfered with your encrypted chats. The chat app is favored by diplomats, activists, and journalists for its security. It uses end-to-end message encryption and “safety numbers” – cryptographic fingerprints associated with the keys securing a conversation – which users can compare to verify they have the expected encrypted connection with a contact. But in theory, someone could still intercept messages by corrupting the centralized directory of accounts and posing as somebody else – a classic "man in the middle" attack. Everything would still be encrypted, just going to the wrong place. To fight this possibility, Signal announced a new feature called Automatic Key Verification (AKV) on Tuesday. From a user perspective, AKV is easy: Tap on a Signal contact’s profile, navigate to the “View Safety Number” screen, and tap on the “Verify automatically” button. It will then show a green checkmark to verify that the contact’s public encryption key matches what Signal’s key transparency system expects. Behind the scenes, however, Signal has developed a new architecture for detecting whether someone has tampered with the public keys associated with an account to intercept messages, as that would require a change to the public encryption key and, in turn, the safety number that a user might not recognize. Ledgers and trees and third parties, oh my! Signal described the new system as serving as a ledger of public keys in which every change a user makes to their information (e.g., linked phone number) leads to a new iteration of the ledger. Accompanying that ledger is an index, allowing Signal users to verify the information in the ledger about themselves or their contacts to make sure it hasn’t been altered by a malicious third party seeking to intercept messages. This ledger lives on an “open-source key transparency server” Signal created for the AKV process, the company said. “When Signal users register, change their phone number or username, or re-create their account, Signal records the changes in a log tree ('the ledger') and facilitates searching through the log tree with prefix trees ('the index books'),” Signal said in the announcement. Digging through an index is hardly automatic, however, so Signal combs the index on the user's behalf to verify the information they’re retrieving about a contact is the most up-to-date. Up-to-date doesn’t mean it’s accurate, however, which is where third-party auditors come in. Cloudflare and security firm Trail of Bits serve as Signal’s AKV third-party auditors, according to the announcement. Their role in the whole thing is to verify that Signal’s own key transparency server isn’t compromised. Per the announcement, third-party auditors check the index to ensure entries don’t appear to have been altered. If those checks come out clear, the auditor signs the response to indicate that the keys being provided are the same for both users, thus eliminating the possibility of a man-in-the-middle attack. Yet again we have a security shortcoming, as auditors can guarantee the index and key transparency server hasn’t been tampered with, but can’t verify the accuracy of the data they contain, which is where the final part of the puzzle comes in: Monitoring. “There are two ways for customers to interact with the ledger: looking up someone else’s address, and looking up their own,” Signal explained. “Monitoring requires Alice and Bob [your usual cryptographic placeholders] to do both of these things on a regular basis, each detecting a different kind of tampering.” Alice and Bob are each able to monitor their own ledger entries via the Signal app, which periodically checks it automatically, and they can verify their connection’s data is correct through the View Safety Number “Verify Automatically” button we mentioned earlier. “These two kinds of monitoring, combined with third-party auditing, form a complete detection system: auditing guarantees that Alice and Bob are looking at the same data, and monitoring guarantees that both of them are regularly checking that data for accuracy,” Signal explained. Security is never simple AKV still ultimately leaves Signal users on the hook for their security: If you want to be truly sure your contact is who they say they are, you’ll need to hit that verify button every time you want to chat. It’s also worth pointing out that this won’t always work for all Signal users. “Your Signal app automatically verifies your own phone number and username data in the log,” the announcement said. “But to verify this for someone else, you need to have their phone number.” In other words, if you don’t have your contact’s phone number through Signal or a matching entry in your phone’s address book, you can’t use AKV to verify the encryption key associated with that contact. AKV can also be disabled for users who don’t want a third party involved in verifying their identity, in which case Signal recommends relying on good old fashioned safety number or QR code verification. Nothing in the cryptographic verification space is ever easy, is it?®

This is an epic month for Microsoft patches, though not a record-setting one. Redmond addressed 421 bugs in its own products this month - about 200 fewer CVEs than last month, but likely the new norm with AI-assisted vulnerability disclosures and fixes. The big news is that North Korea’s Lazarus Group (and possibly other miscreants) found and attacked one of these flaws as a zero-day in early June. The bug, tracked as CVE-2026-68820, is a use-after-free in the Windows Ancillary Function Driver for WinSock. “A locally authenticated attacker could run a specially crafted application on an affected system to trigger a race condition,” Redmond warned, adding that successful exploitation could allow an attacker to execute code with SYSTEM-level privileges, and with no user interaction required. Microsoft credited Check Point researchers Moshe Marelus and David Driker with finding and reporting CVE-2026-68820, and the security shop’s threat intel lead told us that his analysts first observed attackers - namely North Korea’s Lazarus Group - battering this CVE at the beginning of June. “We are familiar with one successful implementation of the CVE - but we assume it was used widely in the campaign,” Sergey Shykevich, director of threat intelligence at Check Point, told The Register. He’s talking about Operation Dream Job, a long-running campaign targeting organizations worldwide, especially those in the defense sector, and attributed to Lazarus, an umbrella term for Pyongyang's government-sponsored goons who specialize in cryptocurrency theft, extortion attacks, and IT worker scams. It’s probably best known for the Sony Pictures Entertainment hack in late 2014 and the WannaCry ransomware outbreak in 2017, although the group has been active since at least 2009. Lazarus’ DreamJob campaigns have been around since 2020, and they use social engineering to lure job seekers with fake offers for high-profile positions, then trick the victims into clicking on malicious links or opening malware-laced documents. The goal in these attacks involves stealing IP and other sensitive data, conducting cyber spying missions, and collecting financial information. When Dream Job and Patch Tuesday collide This new wave of attacks focuses on the defense sector in Europe and India with dream jobs impersonating Lockheed Martin and privacy-tech firm Enveil. Attackers created at least three fake Enveil sites, and some even ranked as the top search result, making them even more believable to job seekers - and harder to spot a phish. “In this campaign, the threat actor expanded its delivery method by leveraging impersonation websites and search engine optimization (SEO) techniques to distribute the trojanized applications, increasing its credibility and helping it evade some phishing-based detections,” Check Point researchers said in a Tuesday blog. These attacks involve Lazarus distributing a modified PDF viewer called SecurityPDF designed to execute malicious payloads embedded within attacker-crafted PDF files when the user opens them. The PDFs, when opened, execute a never-before-seen backdoor that Check Point named Troy. And during the intrusions, the Norks exploited CVE-2026-68820 as a zero-day to deploy a new version of FudModule, Lazarus’ kernel-mode rootkit. “We will not be disclosing full technical details of the vulnerability in this article, as it was patched on the August 11 Patch Tuesday fix,” the researchers wrote. “At a high level, the exploit takes advantage of how afd.sys handles a socket is created when it is accessed concurrently by several threads at once.” Shykevich told us that “this campaign shows that this actor continues to develop new tools (like Troy), and finding and implementing new vulnerabilities in Windows to evade detection.” Best of the rest Redmond lists one of the other 421 Microsoft CVEs as publicly known. It’s CVE-2026-62832, an elevation-of-privilege flaw, and the Windows giant says exploitation is “more likely,” so patch this one sooner. “An authenticated attacker who has credentials for another local account could run a specially crafted application to load another user's registry hive,” according to the security advisory. “Successful exploitation could allow the attacker to access or modify another user's data and gain administrator privileges. User interaction is not required.” While CVE-2026-68820 and CVE-2026-62832 are the only vulnerabilities that Microsoft considers “notable” in its August patch cycle, Trend Micro’s Zero Day Initiative highlights five others, including one that came through ZDI’s bug reporting program and another that was successfully exploited at ZDI’s Pwn2Own contest in Berlin. All five of these should be considered notable and exploitable, so give those a read, too. CVE-2026-62893, a critical flaw in Windows Deployment Services TFTP Server that leads to remote code execution without user authentication or user interaction, is the one disclosed through ZDI. “TFTP has no auth mechanism and is available remotely vid UDP port 69,” ZDI bug boss Dustin Childs wrote. “UDP port 69 should be blocked at your perimeter, but this could easily be used by attackers for lateral movement within an enterprise. Again, test and deploy this one quickly if you’re using WDS for deployments in your enterprise.” Meanwhile, CVE-2026-62911, one of the many Exchange bugs in this month’s release, was demonstrated at ZDI’s Pwn2Own in Berlin. It allows a privilege escalation via an authentication bypass, and exploitation would allow an attacker to “take over the mailboxes of all Exchange users, attackers can send emails, read emails, download attachments,” according to Microsoft, which oddly deemed “exploitation less likely.” Childs calls BS on this. “Ignore Microsoft’s exploitability and Exploit Code Maturity ratings,” he wrote. “We handed them working exploits, so this is a real threat.” ®

Hackers associated with the Russian threat group Sandworm have been targeting system administrators and IT professionals through fake job offers since at least May. [...]

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 stores a unique encryption key in a silicon-resident fortress that’s built into the device running the browser. On Windows machines, this fortress is called a TPM, short for Trusted Platform Module. On macOS and iOS, it’s known as a secure enclave. Other platforms have differing names. Recently released versions of Chrome for Windows and macOS generate a key that’s stored in this fortress.

An antidote to session cookie theft

DBSCs protect against the theft of session cookies, the unique strings of characters that websites store on browsers. Session cookies greatly speed up browsing on sensitive sites that require user authentication. Instead of requiring the exchange of credentials each time a user opens a new site page, the server sets a session cookie that effectively proves the user has already successfully logged in.

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Microsoft released its monthly security updates on Tuesday, and one of the flaws it closed is already being used in attacks. The bug sits in a core Windows kernel driver that handles network socket operations. An attacker with code already running on a machine can use it to escalate to SYSTEM. That patch goes out first. The flaw is tracked as CVE-2026-68820 (CVSS score: 7.0) and is the only Swati Khandelwalhttp://www.blogger.com/profile/[email protected]

Anthropic will begin labeling AI-generated content created by Claude, Claude Code, and the company’s API, as well as Claude models via third-party services, according to The Register.

Text generated by future Claude models will be given an invisible watermark. According to Anthropic, the watermark is embedded directly into the generated text without affecting its meaning or readability. For files, Anthropic will instead use signed metadata in accordance with the C2PA standard.

The effort is part of the company’s plan to comply with the EU’s AI Regulation and transparency requirements regarding AI-generated material. However, the labeling will be implemented globally for all users.

At the same time, Anthropic noted that the technology has its limitations. A label does not guarantee that material was created by Claude. Similarly, the absence of a label is not necessarily proof that the material is not AI-generated.