Password manager Dashlane locked out multiple users after an external brute-force attack triggered its automated account-suspension defenses. Affected users received emails about suspicious access requests and device-registration codes from foreign locations they did not initiate, prompting confusion about whether the messages were themselves phishing. Dashlane confirmed the suspensions were a built-in security response to credential-stuffing-style login attempts and said there is no evidence its systems were compromised. The company opened an investigation on May 31 at 15:19 UTC and marked it resolved by 22:30 UTC, with all affected accounts unsuspended. The episode shows account-lockout defenses working as designed, though the user-experience and phishing-confusion fallout is real.
Seqrite Labs has documented Operation Dragon Weave, a China-aligned cyber-espionage campaign targeting government, research, academic, technology, and financial-services organizations in the Czech Republic and Taiwan. Spear-phishing emails carry ZIP attachments that trigger one of two infection chains: a malicious LNK file masquerading as a PDF that runs PowerShell, or a self-contained Rust dropper launched directly. Both extract RuntimeBroker_update.exe, which DLL-sideloads a malicious UnityPlayer.dll to deploy a Rust loader called RUSTCLOAK. RUSTCLOAK decrypts and runs the final payload, an AdaptixC2 agent codenamed AZUREVEIL that uses Microsoft Azure Blob Storage for command-and-control. The use of legitimate cloud services for C2 and Rust tooling complicates detection.
Krebs on Security reports that attackers social-engineered Meta's newly-deployed conversational AI account-recovery assistant to hijack high-value, short Instagram handles allegedly worth over half a million dollars. Meta had rolled out the AI layer to reduce friction in common recovery workflows - relinking emails, triggering password resets, verifying ownership - that previously required weeks of back-and-forth with automated ticketing. Just as human support staff can be tricked into granting unauthorized access, the AI assistant proved equally eager to help and vulnerable to manipulation. Meta pushed an emergency patch over the weekend and says no back-end database was breached. Critically, the exploit failed against any account with MFA enabled.
Anthropic is set to give the EU's cybersecurity agency ENISA access to its restricted Mythos model through Project Glasswing - making ENISA the first EU institution and first entity outside the US and UK to join. The move, communicated to the European Commission over the weekend, ends a weeks-long standoff after euro-area finance ministers, the ECB, and member states demanded access on learning Mythos had found flaws in systems European banks, governments, and critical infrastructure rely on. Terms covering data sovereignty, sharing findings with member states, and the scope of systems ENISA may test are still being negotiated. BNP Paribas and Mistral continue building a European alternative.
Dutch authorities have taken offline a botnet of at least 17 million infected computers, tablets, and smartphones, seizing more than 200 servers at a Netherlands-based hosting provider. The action was led by the National Police with the National Cyber Security Centre (NCSC). Local media link the infrastructure to Asocks, a service that advertises itself as a universal residential-proxy provider - the kind of proxy network used to launder malicious traffic, run credential-stuffing and ad fraud, and anonymize attacks. The hosting provider took the botnet offline once it was confirmed to be supporting criminal activity. Authorities have not formally named the botnet or announced arrests.
WithSecure has attributed persistent attacks against Ukraine and Ukraine-related entities since at least August 2025 to GREYVIBE, a previously undocumented Russian-speaking group operating in the Russian time zone and aligned with Kremlin intelligence interests. Victims span military, government, civilian, and business organizations. The group uses spear-phishing (PhantomMail, delivering JavaScript loaders from Google Drive and 4sync), a PowerShell RAT called PhantomRelay, and ClickFix-style fake-CAPTCHA pages (PhantomClick) impersonating Zoom and a fake adult-club site (PrincessClub). WithSecure describes GREYVIBE as low-to-moderately sophisticated, hampered by repeated OPSEC mistakes, but increasingly relying on generative AI and LLMs to accelerate malware development. Some members have ties to the broader Russian cybercrime ecosystem.
Google has made Device Bound Session Credentials (DBSC) generally available in Chrome, rolling it out to all users to blunt session-cookie theft. First announced in 2024 and in beta since April, DBSC cryptographically binds session cookies to a specific device using the hardware security chip - the TPM on Windows or the Secure Enclave on macOS. Because the public/private keys are generated inside the security chip and never leave it, stolen cookies become useless on any other machine, defeating the infostealer-to-account-takeover pipeline that bypasses MFA. Google frames it as a shift from reactive detection to proactive prevention. The protection is most effective where sites adopt the DBSC server-side protocol.
Security researchers are warning of a phishing campaign that impersonates Signal Support over text message to steal users' backup recovery keys, specifically targeting journalists and activists. Once an attacker obtains the recovery key, they can decrypt the victim's entire message-history backup. The campaign relies purely on social engineering - there is no flaw in Signal's cryptography - tricking targets into handing over the secret that protects their encrypted backups. The targeting of journalists and activists points to surveillance-motivated actors rather than financially-driven crime. Signal users should treat any unsolicited 'Support' contact requesting recovery keys or codes as hostile, since Signal never asks for them.
Anthropic has confirmed it will roll out Claude Mythos-class models to the general public in the coming weeks. Mythos was originally announced in April as a restricted preview available only to select security researchers and partners; Anthropic cited significant security risks if released too broadly. The company now says it has developed sufficient guardrails. Anthropic frames the trade-off as compressing the attacker advantage: 'in the short term, this could be attackers, if frontier labs aren't careful... in the long term, defenders will more efficiently direct resources and use these models to fix bugs.' Pricing and tier availability are not yet disclosed.
Wiz has documented JINX-0164, a previously undocumented financially-motivated threat actor targeting cryptocurrency firms via recruitment-themed social engineering and bespoke macOS malware since at least mid-2025. The chain starts with credible LinkedIn profiles offering virtual meetings; victims are steered to a rogue teleconference page that delivers a malicious 'meeting client.' A bash script then pulls AUDIOFIX, a Python-based macOS infostealer and RAT, from apple.driver-store[.]com. The payload is architecture-aware (Intel and Apple Silicon), saved as ChromeUpdater, masquerades as the system audio daemon coreaudiod, and persists via launchctl. AUDIOFIX moves laterally from developer laptops into code-distribution and CI/CD infrastructure, modifying source code to steal wallets at scale.
TrustStrike Labs