Last updated: August 19, 2026 at 1:47 AM UTC
All 741 Vulnerability 286 Breach 129 Threat 319 Defense 7

CrashStealer Mac malware uses an Apple-notarized app to slip past Gatekeeper

Jamf detailed CrashStealer, a macOS infostealer delivered through a signed, Apple-notarized app called Werkbit that passes Gatekeeper, since it carried a valid developer ID before Apple revoked it. Distributed as a disk image and gated behind a meeting PIN so it is served only to targeted visitors, the malware validates the victim's login password locally, then harvests broadly from browsers, cryptocurrency wallets, password managers, and the keychain, encrypting the loot before sending it out. It persists by copying and re-signing itself. There is no zero-click stage: a victim still runs the app and enters their password, but the notarized delivery and careful targeting make it more convincing than typical Mac stealers.

Check
Remind Mac users that notarization does not guarantee an app is safe, to be cautious of apps delivered by disk image behind meeting codes, and to refuse password prompts from unexpected installers.
Affected
Mac users who download and run the notarized Werkbit app and enter their password; CrashStealer then steals browser data, crypto wallets, password-manager contents, and keychain secrets, and reinstalls itself to persist.
Fix
Install apps only from trusted sources, treat unexpected password and disk-image prompts with suspicion, keep macOS and endpoint tools updated to catch known indicators, and monitor for apps copying and re-signing themselves.

Popular ModHeader dev extension pulled after hidden history collector found

Google and Microsoft removed ModHeader, a header-editing browser extension popular with developers, with about 1.6 million installs, after researchers at Stripe OLT found a hidden browsing-history collector inside the official, signed store version. The collector was dormant, gated off by an empty allow-list, and no evidence has emerged that it ever sent data, but its presence in a trusted, signed extension is the concern. Its design frustrated automated review: the data was encrypted, the upload was switched off so sandboxes saw nothing leave, and malicious code was blended into a legitimate codebase, so scanners rated it low risk. It is a reminder that a store signature proves origin, not safe behavior.

Check
Check whether ModHeader is installed on developer or tester machines, remove or update it per the vendors' guidance, and review which browser extensions have broad permissions across your organization.
Affected
Developers and testers who installed ModHeader, and their organizations; a trusted, signed extension shipped a dormant collector capable of recording visited domains, showing signed extensions can still hide unwanted behavior.
Fix
Govern browser extensions with allow-lists and permission reviews, do not treat a store signature as proof of safe behavior, prefer minimal necessary extensions, and monitor for extensions contacting unfamiliar external endpoints.

Exposed server unmasks three Evilginx phishing crews stealing Microsoft 365 sessions

A phishing operator left a Python web server exposed with directory listing on, letting researchers at Lexfo lift the entire toolkit and pivot to two more operators running three Microsoft 365 phishing campaigns. Each used a custom fork of the open-source Evilginx proxy to steal live session cookies and tokens, defeating multi-factor authentication by relaying the real login. The largest campaign ran over a year, logging 218 captured accounts, mostly corporate mailboxes, and a token file left in a public repository held 97 live Microsoft tokens. The report stresses two different MFA-bypass methods appeared, one proxying the real login and one abusing the device-code flow, which require different defenses to stop.

Check
Assess your Microsoft 365 defenses against both adversary-in-the-middle proxying and device-code abuse, hunt for suspicious token use and session reuse from unusual locations, and review Conditional Access coverage of the device-code flow.
Affected
Microsoft 365 organizations, especially corporate mailboxes; Evilginx-style proxies steal live session tokens to bypass MFA, and passkeys stop the proxy method but not the separate device-code abuse technique.
Fix
Enforce phishing-resistant authentication like passkeys against proxy phishing, use Conditional Access to block or limit the device-code flow, revoke suspicious sessions and tokens, and monitor sign-in logs for token reuse across locations.

Japan's largest taxi operator shuts down systems after a cyberattack

Nihon Kotsu, Japan's largest taxi operator, shut down internal systems after a cyberattack, disrupting parts of its operations while it investigates and recovers. Precautionary shutdowns like this are a common response to intrusions such as ransomware, aimed at containing an attacker and limiting damage while forensic work proceeds, though they also interrupt normal business. The incident fits a broader pattern of attacks against transportation and logistics providers, whose real-time operations and large customer bases make downtime costly and pressure on victims high. Full details, including whether customer data was accessed, were not yet available, but the disruption underscores how operational technology and business systems in transport are increasingly targeted.

Check
Transportation and logistics operators should review their ability to detect and contain intrusions quickly, test whether critical operations can continue during a systems shutdown, and confirm backups and incident-response plans are current.
Affected
Transportation and logistics providers whose real-time operations make downtime costly; attackers target them for disruption and leverage, and a breach can force a business-halting precautionary shutdown before data impact is known.
Fix
Segment operational and business systems, maintain tested offline backups and an incident-response plan, enforce phishing-resistant MFA on remote access, and rehearse continuing critical services during a partial or full systems shutdown.

Ghostcommit hides secret-stealing instructions inside images to slip past AI reviewers

Researchers at the ASSET Research Group demonstrated Ghostcommit, an attack that hides malicious instructions inside a PNG image so AI code reviewers miss them entirely. A harmless-looking conventions file points the coding agent to the image, whose rendered text tells the agent to read the repository's .env file and encode its secrets as a list of numbers written into the code. Because tools like CodeRabbit and Bugbot skip image files by default, the pull request passes review clean; the trap springs later when a developer asks the agent for an unrelated task. The outcome depended on the tool wrapping the model: some agents leaked secrets, while Claude Code refused.

Check
Review how your AI code reviewers and coding agents handle images and convention files like AGENTS.md, and check whether reviewers inspect image contents rather than skipping them as opaque binary files.
Affected
Teams using AI code reviewers that skip images and coding agents that auto-follow repository convention files; a merged pull request can later drive an agent to read .env and leak its secrets.
Fix
Configure AI reviewers to inspect image contents, treat convention files and repo content as untrusted input, keep secrets out of agents' reach, and require human review before agents read sensitive files.

Compromised jscrambler npm releases dropped a cross-platform infostealer on install

Attackers used a stolen publishing credential to push malicious versions of the jscrambler npm package that install a Rust infostealer as soon as the package is added to a project. Socket ties five bad versions to the same actor, published over about three hours; the malware ships as native binaries for Windows, macOS, and Linux and sweeps developer machines for cloud credentials, crypto wallets, and password-manager vaults. Because jscrambler is a build-time tool used in development and CI, the stealer runs where deploy tokens, cloud keys, and source code live. Partway through, the dropper moved into the package's main code, so installing with scripts disabled does not stop it.

Check
Check lockfiles, package logs, and CI records for the malicious jscrambler versions installed since July 11, move to a clean release or pin to 8.13.0, and clear affected versions from caches.
Affected
Developers and CI pipelines that installed the malicious jscrambler versions; the infostealer captures AWS, Azure, and Google Cloud credentials, crypto wallets and seed phrases, and password-manager vaults from the build environment.
Fix
Remove the bad versions, rotate every credential exposed in affected developer and CI environments, hunt for temp-directory binaries and hidden persistence, and pin and verify dependencies rather than trusting a maintainer account.

RedHook Android malware abuses wireless debugging to seize shell-level control

Group-IB detailed a new version of the RedHook Android banking trojan that gains shell-level control of a phone by abusing the operating system's own wireless debugging feature, with no computer or root needed. Once a user is tricked into granting Accessibility permissions, the malware silently taps through Settings to enable Developer Options and Wireless Debugging, then pairs over the loopback interface to run privileged commands. From there it can silently install or remove apps, change secure settings, log keystrokes, stream the screen, and steal credentials, while an aggressive persistence stack keeps it running through reboots. It spreads through social engineering, with attackers impersonating government or bank staff.

Check
Remind users to install Android apps only from official stores, distrust calls or messages urging them to install an app or enable Accessibility, and review which apps hold Accessibility permissions.
Affected
Android users tricked into sideloading the malware and granting Accessibility; RedHook then enables wireless debugging to gain shell-level privileges, letting it control the device, steal banking credentials, and resist removal.
Fix
Keep installs restricted to official app stores with Play Protect enabled, treat Accessibility requests with suspicion, and for organizations, monitor or block wireless-debugging activation and enforce mobile threat defense on banking devices.

Lone operator exploited Langflow flaws to steal AI and cloud keys across tenants

Sysdig detailed a financially motivated operator who chained two Langflow vulnerabilities to raid the AI orchestration platform for credentials, part of why CISA just added one of them to its exploited-vulnerabilities catalog. Using a cross-tenant access flaw (CVE-2026-55255), the attacker ran flows belonging to other tenants to steal their large language model provider keys and AWS keys, while a separate unauthenticated code-execution flaw (CVE-2026-33017) took over the host itself. The activity, observed in late June against an internet-exposed Langflow instance, followed a methodical pattern of reconnaissance, flow enumeration, and credential theft. It underscores that AI orchestration platforms concentrate valuable secrets and are increasingly a direct target once left exposed online.

Check
Identify any internet-exposed Langflow instances, confirm they are patched against the recent flaws, restrict them from public access, and review logs for cross-tenant flow access and unexpected outbound connections.
Affected
Organizations running exposed or unpatched Langflow (CVE-2026-55255, CVE-2026-33017); attackers can execute other tenants' flows to steal AI and cloud keys and run code on the host, harvesting concentrated credentials.
Fix
Patch Langflow, keep it off the public internet, rotate any potentially exposed AI provider and cloud keys, apply least privilege and short-lived credentials, and monitor for cross-tenant access and credential-harvesting behavior.

Fake Go scanning tool hides malware across 222 GitHub repositories

Researchers at Socket uncovered a network of 222 GitHub repositories, tracked as Operation Muck and Load, built to spread Windows malware through a fake Go module posing as a DNS and subdomain scanner. Running the module quietly launches PowerShell that pulls an encrypted payload from attacker infrastructure and deploys infostealers, remote access trojans, and cryptominers. To look trustworthy, the operators used an automated workflow that force-pushes fake commits every minute, making repositories appear actively maintained and generating hundreds of package versions. More than 700 of the module's 1,200-plus versions were malicious. The lures cluster around crypto wallets, Telegram bots, and game cheats, aimed at people likely to run untrusted code.

Check
Review whether developers pulled Go modules or ran tools from unfamiliar GitHub repositories, particularly crypto, wallet, or game-cheat-themed ones, and watch for hidden PowerShell launching from a supposed utility on developer machines.
Affected
Developers and users who clone, build, or run code from these lure repositories; a module posing as a legitimate scanner instead installs infostealers, remote access trojans, or cryptominers on their Windows machines.
Fix
Verify a repository's authenticity beyond how active it looks, since fake commit activity can be manufactured, prefer official module sources, inspect code before running it, and use isolated environments for untrusted tools.

Exposed server reveals crew that backdoored thousands of WordPress sites for resale

A cybercrime group left its own server exposed on the internet for weeks, revealing a mass website-hacking operation that researchers at SOCRadar now track as WP-SHELLSTORM. The crew breaks into sites at scale, plants hidden backdoors, and resells the access to other criminals. Rather than using zero-days, it automated attacks against 27 known vulnerabilities in outdated WordPress and Joomla plugins; a single flaw in the Breeze caching plugin accounted for over 17,000 backdoored sites. Target lists named more than 1.4 million domains, with roughly 25,000 confirmed compromised. The same server also revealed an earlier campaign that stole cloud credentials and database passwords from exposed configuration servers.

Check
Update WordPress and Joomla plugins, especially the Breeze caching plugin and Joomla's JCE editor, and hunt for webshells with suspicious names and fake kernel-worker processes that indicate a backdoor.
Affected
Organizations running WordPress or Joomla sites with outdated, vulnerable plugins; the crew automatically exploits known flaws to plant backdoors, then sells that access, making even low-profile sites worthwhile footholds.
Fix
Keep plugins patched on a regular cadence, put a web application firewall in front of anything you cannot patch immediately, scan for known webshell indicators, and rotate credentials on exposed configuration servers.