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Microsoft has fixed a flaw in its Authenticator app for Android that let a malicious app with no permissions pose as a trusted Microsoft app, such as Teams, and collect sign-in tokens for a victim's work account. Microsoft tracks the flaw as  CVE-2026-80097  and fixed it in Authenticator for Android version 6.2606.4246, so anyone using the app should update. In the researchers' tests, the tokens gave full access to the account's email, files, and calendar. Microsoft says exploitation also needs the victim to complete a sign-in step in Authenticator, and that the flaw has not been used in attacks. The research comes from Ofek Levin, working through a fellowship program at the security firm  Enclave , which published the technical details on October 23, 2026. Microsoft assigned the CVE on September 8 and rated it 8.6 on the CVSS scale, which it labels "Important." On Android, Authenticator does more than show six-digit codes. It also acts as a broker: when ...

An attacker who gained access to Keystone's website obtained the key that its hardware wallets use to prove they are genuine, the company said in a  statement  on October 26. Someone with that key could build counterfeit devices that pass the online check owners use to verify a Keystone. A buyer who trusted a counterfeit could have their crypto stolen, but the incident did not involve owners' recovery phrases or wallet private keys. Keystone will destroy 18,835 unsold devices that carry the key, and all new devices will get a new one. Keystone found the unauthorized access on October 20, and its advice to owners depends on when a device arrived. For a device received after that date with the old key, the company said: "Even if such a device passes authentication, we cannot completely rule out the possibility that it is counterfeit." Owners of such a device should contact Keystone support and use it only after the company confirms it is genuine. A device del...

Fake login pages are nothing new, but generative AI is making them easier to build and more convincing. Attackers can recreate familiar login screens, impersonate trusted brands and tailor phishing attempts to specific employees or organizations.  Some fake login pages go beyond stealing passwords. They can also capture MFA codes or hijack authenticated sessions, allowing attackers to gain access to corporate accounts even when additional security measures are in place. How AI is making fake login pages more convincing Attackers have long used fake login pages to steal credentials, but generative AI makes it easier to create convincing replicas of legitimate authentication portals. From company logos and page layouts to login prompts, these fraudulent pages can closely resemble the websites employees regularly access. AI also makes it easier to tailor phishing campaigns to specific organizations or employees. For example, attackers can create personalized IT notifications ...

The North Korea-linked Lazarus Group has been attributed to a cyber espionage campaign dubbed Operation FlashHole targeting at least three organizations in South Korea spanning the construction, software, and wire-communication equipment manufacturing sectors. According to Russian cybersecurity company Kaspersky, the campaign has been active since at least July 2025. It's assessed to pick up from where Operation SyncHole left off. "The group targeted victims more selectively, sending spear‑phishing emails with links to fabricated but relevant sites, such as portfolio and résumé pages tailored to each target," Sojun Ryu, senior security researcher at Kaspersky GReAT, said in an exhaustive analysis. Operation SyncHole was first documented by Kaspersky in April 2025, detailing the state-sponsored adversary's targeting of South Korea's software, IT, financial, semiconductor manufacturing, and telecommunications industries since November 2024 to deliver malwa...

A criminal using the Amadey malware can no longer access or steal data from 180,000 infected computers around the world, including some in Australia, the Australian Signals Directorate (ASD) says. The agency's operators gained access to the criminal's operation's backend and cut it off from those computers. "The next steps that we took were to disconnect that Amadey controller from all those victims," Tauri Gregory, ASD's acting deputy director-general of intelligence,  told ABC News  in an interview published on October 27. ASD is Australia's foreign signals intelligence and cyber security agency. Its  offensive cyber operations  need explicit approval from the Australian government and can disrupt cybercriminals overseas by disabling their infrastructure. Amadey was sold to criminals as a service in 2018, according to  ESET's analysis of Amadey . Each buyer runs its own control panel on its own servers. Computers infected with Amadey check ...

OpenAI's compaction feature, which shrinks a long conversation to save space, could be turned into a way to copy a model's hidden reasoning out in plain text,  security firm Xint  has shown. OpenAI's reasoning models work through a problem before answering, and the service normally returns only the raw reasoning as  an encrypted item  the user cannot read. The method got past the protections OpenAI added in August against this kind of reasoning theft. OpenAI confirmed the problem and fixed it on October 23, according to Xint. Xint ran the technique against gpt-5.6-sol, one of OpenAI's reasoning models, using math and algorithm puzzles its researchers wrote themselves. The reasoning it pulled out came from those same requests, and Xint did not claim the method could reach another user's reasoning. Xint says it cannot prove the copied text is word-for-word the model's real reasoning, because it never had the original to compare against. Two cheaper models e...

The Computer Emergency Response Team of Ukraine (CERT-UA) has issued an alert warning of unauthorized remote access to video surveillance systems manufactured by Dahua. "Cases of compromising IP cameras and DVRs with access to the video stream, changing the device configuration and creating third-party accounts have been recorded," the State Special Communications Service of Ukraine (SSSCIP) said in an alert issued last week. The primary initial access vector used in the attacks is via Easy4IP , a peer-to-peer (P2P) platform that allows users to remotely monitor homes or small businesses by connecting their Dahua IP cameras, NVRs, and DVRs via a smartphone app or web browser by scanning a QR code or entering the hardware Serial Number (SN). The agency has warned that the serial numbers have a predictable structure containing a 10-character model prefix that's identical for all units of the same device family and a five-character hexadecimal counter that's i...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday confirmed active exploitation of the recently patched PHP2Shell flaws by adding them to its Known Exploited Vulnerabilities ( KEV ) catalog. The PHP vulnerabilities, both rated 9.2 on the CVSS scoring system, facilitate unauthenticated remote code execution on affected deployments - CVE-2026-109618 - An out-of-memory corruption vulnerability that allows for unauthenticated remote code execution. CVE-2026-109619 - A stale internal request-state vulnerability that allows for unauthenticated remote code execution. The addition of the two flaws to the KEV catalog comes after Adel Karimi, detection and response lead at Perplexity, confirmed successful instances of remote code execution against honeypot systems on October 24, 2026. "This is now confirmed RCE with usable memory disclosure, not just a crash followed by a suspicious process," Karimi said . "The response delivered an 800 ...

An unknown threat actor has infected 953 online stores, most of them running Magento, as part of a long-running campaign active since July 2025. According to Dutch e-commerce security company Sansec, the activity is designed to add a small piece of code to the store's pages that, when visited by unsuspecting users, serves malicious JavaScript loader code through Magento CMS blocks. "When you visit, that code makes your browser ask the group's server what to do next," Sansec said . "The server first checks whether you are a real shopper or a security scanner, so scanners get nothing." No less than five distinct domains have been observed over time in connection with the campaign - manulfie[.]click, first seen in July 2025 neswnsssn[.]click, first seen in December 2025 lanhd6549tdhse[.]top, first seen in March 2026 additionalver[.]com, first seen in June 2026 deepveindrilling[.]com, first seen in October 2026 Sansec said it found deep...

PHP has rebuilt its official Windows packages for PHP 8.2 through 8.5 to fix CVE-2026-111497 , a flaw in the Brotli compression library that the packages include. The flaw can let an attacker corrupt memory and potentially run code. PHP says the flaw can be reached through the cURL extension when the extension decompresses HTTP responses automatically. cURL leaves that off by default, but applications and HTTP client libraries can turn it on. The rebuilt packages, numbered 8.5.12-1 , 8.4.27-1 , 8.3.36-1 and 8.2.35-1 , come five days after the October 21 releases that fixed the two PHP2Shell remote code execution flaws . They use the same PHP source, so those fixes stay in place, and they now include Brotli 1.2.1 , the fixed version. PHP publishes a software bill of materials , a list of the components inside, with each package. For last week's x64 Non Thread Safe builds of all four versions, those lists show Brotli 1.2.0, one of the affected versions. PHP advises Windows...

Cybersecurity researchers are calling attention to what they say is a "recurring social engineering pattern" across hundreds of cases in which threat actors use Microsoft Teams' external chat creation feature to conduct impersonation scams or to deliver malware. "A consistent pattern of attacker behavior has emerged across these incidents: the use of the same throwaway tenants, the same 'IT Support (Internal)' display names, the same remote-access tools, and increasingly, the same payload domains," Arctic Wolf Labs said in a report shared with The Hacker News. The attacks consistently employ IT-themed display names or friendly-sounding first names to subvert external-user warnings in Teams. These messages originate from Teams identities established through newly created or acquired Microsoft 365 tenants. Nearly 30–40% of the cases investigated by the cybersecurity company involve the use of *.onmicrosoft[.]com , a permanent fallback domain auto...

This2Shell, That2Shell, Everything2Shell. That's pretty much how the last week went. Critical bugs that let attackers run code remotely are showing up everywhere. Hackers are scanning for targets, some flaws are already being used in attacks, and security teams have more urgent patches than they can keep up with. And that's not even the full story. A leaked key led to a software supply-chain attack. AI agents are being tricked into following harmful instructions. Old bugs are still being used to break into systems, and some attacks are so simple it's hard to believe they still work. Some websites even went offline to avoid taking chances. It's been a rough week for anyone trying to keep systems safe. Here's what happened. ⚡ Threat of the Week PHP2Shell Flaws Puts Organizations on Alert — The PHP Foundation released patches for two critical vulnerabilities in PHP, CVE-2026-109618 and CVE-2026-109619, that could lead to unauthenticated remote code execution...

Two critical flaws in  Wasmtime , a WebAssembly runtime that can be built into other software, could allow a malicious WebAssembly module to escape the sandbox intended to contain it, the project's maintainers say. An attacker would first need a vulnerable Wasmtime build to compile a module they control, and one of the flaws affects only ARM64 systems. Fixed versions were released on October 19 and 20, and the maintainers have not reported any attacks. Wasmtime runs WebAssembly code outside web browsers. Both bugs are in Cranelift, the compiler it uses by default to turn WebAssembly into machine code. Wasmtime's maintainers at the Bytecode Alliance rated each flaw 9.9 out of 10 on the CVSS scale in advisories published on October 19. CVE-2026-115889  affects Wasmtime across all processor architectures. CVE-2026-115893  affects only ARM64, also called aarch64. The sandbox is meant to keep a module inside set limits. A module can only use its own memory and...

Every SOC struggles with a pile of alerts. Very few of those alerts explain how an attack started or how it progressed. Network data, like that from a network detection and response (NDR) platform, connects individual alerts into one timeline, and it feeds the defensive systems that can tie all events together into one coordinated view. SOC teams often first see the shape of an intrusion through a series of smaller alerts that are triggered (e.g., when a signature matches a known malware hash, a threshold flags an unusual spike in failed logins, or an endpoint agent detects suspicious activity). When viewed through the SIEM dashboard, an attack often begins as a series of distinct events with related or overlapping timestamps. Artificial intelligence has accelerated modern attacks, enabling attackers to automate reconnaissance, craft targeted payloads, and execute scripts in seconds. Yet, speed does not obfuscate the need for stealth. To evade detection, adversaries deliberately d...

A rentable Android spyware kit called uCreator takes over Telegram and WeChat accounts by hiding its code inside working copies of the two apps, researcher Ovi found . It only reaches people who install one of these tampered copies, spread outside the official app stores, or who run WeChat inside the kit makers' own container app. The kit's Telegram part matches Baohuo , a backdoor that Doctor Web reported in October 2025 . Doctor Web found Baohuo in tampered copies of Telegram X, an Android app from Telegram. At the time, the company estimated that more than 58,000 devices were infected. The Hacker News compared the two reports. Doctor Web's technical description of Baohuo lists the same code namespace, com.ucreator.tgjar , the same command-and-control (C2) server, and matching command names as Ovi's analysis. Ovi's analysis, published October 21, 2026, does not mention Doctor Web's findings, and Doctor Web did not name the kit. It is not clear whether...

Cybersecurity researchers have disclosed a Microsoft 365 campaign that has been observed leveraging an adversary-in-the-middle ( AitM ) relay to capture sign-in sessions and then replay the stolen tokens to break into email accounts at 79 organizations. Huntress, which observed the activity between July 14 and September 22, 2026, said it detected 497 successful Microsoft 365 sign-in events across the victim organizations from over 200,000 login attempts, with the attackers ultimately compromising 97 accounts and registering 48 rogue Entra devices. "Rather than guessing passwords, the attacker replayed sign-in tokens stolen from victims, and we've traced more than 200,000 failed login attempts from the campaign window back to the 193.26.115[.]0/24 IP range," Huntress researchers Andrea Hatcher, Susannah Matt, Matt Poto, and Andrew Schwartz said. The attack has been found to employ an AitM login page, which sits between the victims and legitimate Microsoft infrastru...