Continuous enterprise threat intelligence tracking active in-the-wild zero-days (CISA KEV), Microsoft Windows KB cumulative updates, MSRC security advisories, and CVE remediation.
A former U.S. Army soldier has been sentenced to 70 months in prison for hacking and extorting at least 10 U.S. technology and telecommunications companies between April 2023 and December 2024. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Sunday added two critical Citrix NetScaler ADC and Gateway flaws to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation. The vulnerabilities are listed below - CVE-2026-88771 (CVSS score: 9.5) - An improper input validation vulnerability that could all…
Last week on Malwarebytes Labs: LinkedIn adds new checks for fake profiles and work histories Kothamine malware uses Tailscale’s tailcat to evade network detection Criminals turn placeholder domain into ClickFix trap That shipping rebate offer may come with a monthly charge OpenAI agent breached Australian government site, took months to report it New Browse…
The Cybersecurity and Infrastructure Security Agency (CISA) has ordered U.S. government agencies over the weekend to secure their systems against attacks exploiting two critical Citrix NetScaler vulnerabilities. [...]
In this interview with Help Net Security, Chris Latimer, CEO of Vectorize, talks about the security risks hiding in AI agent memory. He found coding agents storing API keys, credentials, and sensitive documents in plain text on developer machines and in cloud services. Latimer explains how attackers could plant poisoned memories through plugins, skills, and …
Roundcube SQL injection CVE-2026-48842 is now being exploited in the wild, putting unpatched webmail servers at risk of database compromise. A Roundcube Webmail vulnerability, tracked as CVE-2026-48842 (CVSS score of 8.1) and patched four months ago, is now being exploited in the wild. The Canadian Centre for Cyber Security added the warning to its advisory …
Authorizer is an open-source server for sign-in and access control in web and mobile apps. Teams run it on their own infrastructure and keep user accounts in a database they choose. Its maintainers have built a permissions engine and an interface for AI agents into the same Go program that logs users in, so a chatbot can ask whether a user may see a document…
AI agents are forcing enterprises to rethink security governance, human accountability and oversight as deployments scale. AWS’s Reimagine 2026 argues that organizations need to build governance into their systems and keep humans accountable for outcomes. The findings come from confidential interviews of 45 to 60 minutes with 154 executives at 128 organizati…
Verdict is an AI image and video detector designed for iPhone. It works offline and requires no account. Choose a photo or video, run a scan, and the app returns a 0–100 score with a verdict and supporting evidence. It requires iOS 16 or later. How it works For photos, Verdict examines signals from an AI-detection model, camera metadata, and sensor noise. It…
The European Telecommunications Standards Institute’s (ETSI) technical report, ETSI TR 104 171, offers guidance on building and evaluating quantum random number generators (QRNGs). It focuses on weaknesses in the devices and their supporting systems that could make the numbers they produce less secure. Components of a QRNG (Source: ETSI) A QRNG measures a qu…
Latest threat intelligence analysis from SANS Internet Storm Center: ISC Stormcast For Monday, September 28th, 2026 https://isc.sans.edu/podcastdetail/10112, (Mon, Sep 28th).
OpenAI is testing a new always-on assistant called "o", and references to the unannounced feature briefly showed up on the company's website. [...]
Citrix confirmed two critical NetScaler zero-days were exploited before patches were available, with attackers able to remotely execute code. Citrix confirmed that two critical zero-day vulnerabilities in NetScaler ADC and NetScaler Gateway were exploited before the company released patches. The flaws allow remote code execution, meaning attackers can potent…
Citrix has confirmed that two critical NetScaler remote code execution vulnerabilities, tracked as CVE-2026-88771 and CVE-2026-88772, are being exploited in attacks and that it has released security updates to fix the flaws. [...]
Security Affairs AI-CYBERSECURITY newsletter includes a collection of the best articles and research on AI in the international landscape Artificial intelligence is rapidly changing cybersecurity, reshaping both the techniques used by attackers and the tools available to defenders. AI agents can automate tasks, analyze large amounts of data, discover vulnera…
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Threat Intel | One Kit, Forty Companies: How a Malware-as-a-Service Platform Used GitHub as a Distribution Network for its Campaign Group Policy hijacked: PAYLOAD ransomware weaponizes Active Directory GPO C…
Wireshark release 4.6.9 fixes 19 vulnerabilities and 16 bugs.
Cloudflare has fixed a vulnerability in Containers and Sandboxes that allowed customers with a Workers Paid account to recover residual data from other customers' containers on the same physical host. [...]
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including international press. OpenAI Agents Accessed US Government Websites Without Authorization Exploit.in Database Reveals the Roots of Toda…
Anthropic has just announced a new Claude Marketplace, and it brings all AI-related tools into one place, including plugins, connectors, agents, and more. [...]
Update October 9, 2026 : CISA has updated this Alert to: (1) include CVE-2026-107406; (2) include CVE-2026-88779 following its addition to the KEV Catalog on Oct. 4, 2026; (3) clarify the potential relationship between CVE-2026-88779 and CVE-2026-88771; and (4) emphasize the importance of promptly applying patches for CVE-2026-88771 through CVE-2026-88779 and CVE-2026-107406, as well as reviewing Citrix guidance for suspected or confirmed compromises involving NetScaler ADC or Gateway. Update October 2, 2026 : CISA has updated this Alert to provide a SIGMA detection rule resource to help identify potentially suspicious activity. CISA is amplifying Citrix’s disclosure of ten new vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway products: CVE-2026-88771 , CVE-2026-88772 , CVE-2026-88773 , CVE-2026-88774 , CVE-2026-88775 , CVE-2026-88776 , CVE-2026-88777 , CVE-2026-88778 , CVE-2026-88779 , and CVE-2026-107406 . CISA added CVE-2026-88771 and CVE-2026-88772 to its Known Exploited Vulnerabilities (KEV) Catalog on Sept. 27, 2026. Both are critical, zero-day vulnerabilities that can independently enable remote code execution. CISA received reports and partner threat intelligence confirming threat actors are actively exploiting these vulnerabilities globally. CISA also added CVE-2026-88779 to the KEV Catalog on Oct. 4, 2026. In Citrix NetScaler deployments configured as a security assertion markup language (SAML) Service Provider (SP) or Identity Provider (IdP), CVE-2026-88779 can independently create a denial of service condition. In unpatched Citrix NetScaler deployments, cyber threat actors may also exploit CVE-2026-88779 to force a reboot and accelerate conditions to allow execution of code previously injected through exploitation of CVE-2026-88771. Because updating Citrix NetScaler deployments can be complex and may require downtime, CISA is issuing this Alert to help organizations assess exposure, prioritize mitigation actions, and account for these vulnerabilities in their risk-management activities. Given the potential consequences of successful exploitation and confirmed malicious activity involving at least some of these vulnerabilities, CISA urges users and administrators to review Citrix’s advisories and install the relevant updated versions as soon as possible. CISA encourages system administrators and network defenders to check for indication of compromise prior to patching. Citrix has made indicators of compromise available through NetScaler Console and published additional guidance in their recent Security Bulletins to support organizations in assessing potential compromise. CISA recommends organizations forward their NetScaler logs to a centralized security information and event management (SIEM) or log retention system, as local logs may rotate quickly and overwrite forensic artifacts. Organizations that suspect compromise should preserve forensic evidence before applying updates, as updates may reduce forensic visibility. Further, organizations should restore a known good secure backup for their NetScaler deployment that pre-dates any confirmed or suspected compromise and rotate all restored secrets, including local account passwords, key-encryption keys, and SSL certificates. Review Citrix’s Steps to Take if NetScaler ADC is Suspected to be Compromised for best practices. Organizations should review the following Citrix resources: Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-107406 Protecting Customers: Immediate Guidance for CVE-2026-107406 in NetScaler ADC and NetScaler Gateway - Security Updates - Citrix Community Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88779 Understanding and Addressing CVE-2026-88779 in Citrix NetScaler ADC and Citrix NetScaler Gateway - Security Updates - Citrix Community Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771 through CVE-2026-88778 - Security Updates - Citrix Community Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778 Organizations may also review CISA’s SIGMA detection rule to help identify potentially suspicious activity in relevant log sources ( Note : CISA may update this resource as more information becomes available): CISA’s SIGMA Rules GitHub Repository Disclaimer The information in this report is being provided “as is” for informational purposes only. CISA does not endorse any commercial entity, product, company, or service, including any entities, products, or services linked within this document. Any reference to specific commercial entities, products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply endorsement, recommendation, or favoring by CISA.
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-88771 Citrix NetScaler Improper Input Validation Vulnerability CVE-2026-88772 Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA will continue to add vulnerabilities to the catalog that meet the specified criteria . Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form . Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.
Kosovo national Ardit Kutleshi pleaded guilty to running Rydox, a cybercrime marketplace that sold stolen identities and credentials for years. Ardit Kutleshi , 28 years old and a citizen of Kosovo, pleaded guilty last week to building and running the cybercrime marketplace Rydox. The Rydox marketplace has been active since February 2016; it facilitated over…
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Know what was tested before your SAP ECC migration goes live In this Help Net Security interview, Guilherme Joventino, COO of MIGNOW, explains why some large companies plan to stay on ECC past the 2027 deadline and pay SAP for extended support until 2030. The in…