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Hvězdička u CVE znamená, že jsem to číslo vytáhl z širšího textu článku. Neukazuju u něj proto KEV, EPSS ani CVSS, a to preventivně, protože článek se na něj mohl jen odkazovat, třeba jako na starší kauzu.

The Developer is the New Perimeter: How Supply Chain Attacks Are Becoming Cloud Breaches 

Key Takeaways Malicious packages can steal cloud credentials during installation, before applications run. Stolen credentials turn developer workstations and CI/CD pipelines into gateways to cloud resources. Restrict installation scripts, minimize credential privileges, protect metadata access, and monitor cloud activity. Containment requires revoking exposed credentials and investigating cloud activity beyond removing compromised packages. Qualys TotalCloud connects cloud risk signals, while…

npm GitHub US

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· Qualys · The Developer is the New Perimeter: How Supply Chain Attacks Are Becoming Cloud Breaches 

SPOJENO PŘES CVE Citrix admins warned to shut down NetScalers over 2 exploited zero-days

Two unpatched Citrix NetScaler zero-day vulnerabilities are reportedly being exploited in attacks, with cybersecurity agencies, security researchers, and IT providers privately warning organizations about the flaws ahead of patches expected next week. [...]

KEV ✓ EPSS 0.33 CVSS 9.3 CVE-2026-19489 CVE-2026-19490 Citrix US CA IT NL FI FR

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· BleepingComputer · Citrix admins warned to shut down NetScalers over 2 exploited zero-days · Cyber Centre Kanada · AL26-019 - Vulnerabilities impacting Citrix NetScaler ADC and NetScaler Gateway - CVE-2026-19490 and CVE-2026-19489 · CSIRT Itálie (ACN) · Vulnerabilità in prodotti Citrix · NCSC-NL · NCSC-2026-0318 [1.00] [M/M] Kwetsbaarheden verholpen in Citrix NetScaler ADC en NetScaler Gateway · zachyceno · NCSC-FI · Citrix Netscaler ADC ja Gateway -tuotteissa kriittisiä haavoittuvuuksia · zachyceno · CERT-FR – avis · Multiples vulnérabilités dans les produits Citrix (20 août 2026)

Frequently asked questions about reported Citrix NetScaler zero-day vulnerabilities

There are reportedly two unpatched zero-day Citrix NetScaler vulnerabilities capable of enabling remote code execution that have been actively exploited in the wild, with no patches available at this time.Key takeawaysReports indicate that there are two critical zero-day vulnerabilities in Citrix NetScaler.The reports originate from a pre-notification sent out ahead of public disclosure, so there are currently no specific details about these flaws and no patches available.This post will be…

KEV ✓ EPSS 0.58 CVE-2023-6549 CVE-2025-6543 CVE-2026-19489 CVE-2026-19490 Citrix US

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· Tenable Research · Frequently asked questions about reported Citrix NetScaler zero-day vulnerabilities

JADEPUFFER Agentic Ransomware Targeting Cloud Environments (Campaign)

Multiple sources reported malicious activity linked to JADEPUFFER (Storm-3168), an agentic ransomware operation, during June 2026. This attacker has been observed leveraging exposed secrets and exploiting vulnerabilities in Internet-facing software for initial access to cloud ...

US

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· Wiz Research · JADEPUFFER Agentic Ransomware Targeting Cloud Environments (Campaign)

Kiteworks urges customers to stop using platform after warning from federal intelligence agencies

Frank Balonis, CISO at Kiteworks, told Recorded Future News that the company “received credible threat intelligence from federal intelligence authorities indicating that a threat actor may attempt to target some Kiteworks systems for customers.”

Kiteworks US

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· The Record · Kiteworks urges customers to stop using platform after warning from federal intelligence agencies

Storm-3168: Agentic-driven cloud attacks using compromised service principals

In this article Attack overviewTechnical analysisMitigation and protection guidanceReferencesLearn More Microsoft Security Research has identified malicious cloud activity associated with JADEPUFFER, a threat actor discovered by Sysdig in July 2026 and reported to be the first documented agentic ransomware operation. Our investigation found an extensive Azure-focused resource destruction activity using compromised service principals and cloud credential collection that could be used to…

Microsoft US

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· Microsoft Security Blog · Storm-3168: Agentic-driven cloud attacks using compromised service principals

Criminals turn placeholder domain into ClickFix trap

A domain that has long appeared in software documentation, code examples, and developer test material is now being used to push a ClickFix attack against Windows users. A placeholder domain stands in for a website in an example. The best-known is probably example.com. Another, third-party[.]com, has often been used in documentation to represent an external website, API, or service. However, there is a very important difference between the two: example.com is reserved for documentation, while…

US

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· Malwarebytes Labs · Criminals turn placeholder domain into ClickFix trap

A Closer Look at Malware From the Macfinger ClickFix Campaign, (Fri, Sep 25th)

Introduction My previous post on Macfinger ClickFix was two days ago, and this campaign remains active. The more I look into the malware delivered by this campaign, the more I believe it is not a variant of Atomic macOS (AMOS) Stealer as originally reported. There are too many differences between what I've documented with recent AMOS Stealer activity and what I'm now seeing with this malware. The data collection and method of exfiltration is different between these two malware families. The…

Apple US

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· SANS Internet Storm Ctr. · A Closer Look at Malware From the Macfinger ClickFix Campaign, (Fri, Sep 25th)

Riasztás a Tárhely.Eu nevében küldött adathalász kampány kapcsán

A Nemzetbiztonsági Szakszolgálat Nemzeti Kiberbiztonsági Intézet riasztást ad ki a Tárhely.Eu tárhelyszolgáltató nevében küldött adathalász kampány kapcsán. A beérkezett bejelentések alapján ismeretlen elkövetők a Tárhely.Eu nevével visszaélve fizetési felszólításokat küldenek különböző vállalkozások részére. A levélben foglaltak szerint a címzett vállalkozásnak valamely szolgáltatás, például egy SSL-tanúsítvány megújítása kapcsán kiegyenlítetlen díjbekérője van, amelynek fizetési határideje…

Tárhely.Eu HU

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· NKI Maďarsko · Riasztás a Tárhely.Eu nevében küldött adathalász kampány kapcsán

· zachyceno

MacSync under the microscope: new delivery methods and a new payload

MacSync is a relatively young, rapidly evolving family of crypto/info stealers. First advertised on the dark web in 2025 as Mac.c, the stealer was later renamed to MacSync by its creators. The initial versions were implemented as AppleScripts and closely resembled the AMOS stealer family, but over time, MacSync developed distinctive features of its own, including a backdoor module. In this report, we discuss a new infection chain that differs significantly from previous variants. We first…

Apple RU

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· Securelist (Kaspersky) · MacSync under the microscope: new delivery methods and a new payload

InfraTrust report warns network management systems under attack

Attackers are increasingly targeting the management systems used to control enterprise infrastructure, with several critical vulnerabilities actively exploited before or shortly after vendors disclosed them. [...]

CVE-2026-20079 * CVE-2026-20212 * CVE-2026-20293 * CVE-2026-20316 * CVE-2026-31431 * CVE-2026-33197 * CVE-2026-6485 * CVE-2026-73453 * CVE-2026-73456 * CVE-2026-76460 * CVE-2026-83548 * CVE-2026-83549 * CVE-2026-85102 * CVE-2026-85103 * CVE-2026-91843 * US

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· BleepingComputer · InfraTrust report warns network management systems under attack

Fake Claude Max giveaway hides a Google account phishing trap

Phishing follows whatever people want at the moment, and right now that includes AI subscriptions they don’t have to pay for. We recently uncovered a new variation on this theme: A fake Claude Max giveaway that uses a convincing Google sign-in window to steal login information.Claude’s paid plans start at $20 a month and cost considerably more for higher usage limits, while free accounts have stricter limits. That makes the promise of a free upgrade an attractive lure.Microsoft reported in June…

Google Anthropic US

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· Malwarebytes Labs · Fake Claude Max giveaway hides a Google account phishing trap

Inside a multi stage toll fraud operation targeting Poland

CERT Polska uncovered a toll fraud operation targeting Polish users through deceptive Meta advertisements and malicious applications distributed via Google Play. We preserved 1235 ads, linked 852 to 17 applications through code or infrastructure, reconstructed the complete execution chain, and observed live premium SMS and carrier billing tasking.

Meta Google telekomunikace PL

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· CERT Polska · Inside a multi stage toll fraud operation targeting Poland

Macfinger ClickFix campaign, (Tue, Sep 22nd)

Introduction I've found several legitimate websites with injected script for a campaign using the ClickFix social engineering technique. This particular ClickFix campaign was documented earlier this month on the Ransom-ISAC Blog, but it doesn't appear to have a nickname yet. Since this campaign is targeting macOS environments through a fingerprinting process, I'm calling it the "Macfinger ClickFix" campaign. No, this is not related to the MacFinger utility from decades ago. Instead, think of…

US

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· SANS Internet Storm Ctr. · Macfinger ClickFix campaign, (Tue, Sep 22nd)

Unmasking EvilTokens: Getting to the root of device code phishing

In this article What is device code phishing?EvilTokens platform and operationsEvilTokens phishing emailsMitigation and protection guidanceMicrosoft Defender XDR detectionsHunting queries Following its emergence in February 2026, EvilTokens quickly became one of the most widely used phishing-as-a-service (PhaaS) platforms, providing cybercriminals with AI capabilities for tailoring phishing lures and analyzing compromised inboxes to identify high-value targets. This AI-powered cybercrime…

Microsoft finance školství zdravotnictví US

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· Microsoft Security Blog · Unmasking EvilTokens: Getting to the root of device code phishing

21st September – Threat Intelligence Report

For the latest discoveries in cyber research for the week of 21st Setpember, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Japan’s Digital Agency, which operates the Government Solution Service used by multiple ministries, has confirmed a data breach after attackers exploited a vulnerability in a VPN appliance. Approximately 246,000 records were exposed, including names and contact details belonging to government officials and contractors, while financial…

KEV ✓ EPSS 0.76 CVSS 10.0 CVE-2026-76460 CVE-2026-76461 CVE-2026-77692 CVE-2026-91843 Check Point Cisco Oracle ISC veřejná správa doprava IL

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· Check Point Research · 21st September – Threat Intelligence Report

SPOJENO PŘES CVE Mind the (Patch) Gap, Part 2: Fake Websites Used to Deploy Chrome & Windows 0-Day Exploits

On September 9, 2026, Volexity published a blog post detailing the simultaneous use of multiple chained zero-day exploits in Google Chrome (CVE-2026-85046, CVE-2026-87491) and Microsoft Windows (CVE-2026-85880) by two different Chinese advanced persistent threat (APT) actors. Shortly after that blog post was published, Volexity discovered additional campaigns—this time from a third Chinese threat actor, tracked by Volexity under the alias UTA0565—that used the same chained exploits on September…

KEV ✓ EPSS 0.04 CVE-2026-85046 CVE-2026-85880 CVE-2026-87491 Google Microsoft veřejná správa US

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· Volexity · Mind the (Patch) Gap, Part 2: Fake Websites Used to Deploy Chrome & Windows 0-Day Exploits · BleepingComputer · New 'BlueMoon' kit exploited Windows and Chrome zero-day flaws

The fake sites using a cheap toolkit to sell $2,000 AI subscriptions

We found more than 100 subscription websites linked through the same toolkit and closely related developer details. Some impersonate existing products, including GPT-6 Astra, DaVinci Resolve, PixAI, and OpenCut. Another uses the name of Omegle, the chat service that shut down in 2023. Others promote unfamiliar brands with little verifiable information about who operates them. The sites we examined did not use fake password forms or push malware downloads. Instead, they used polished product…

US

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· Malwarebytes Labs · The fake sites using a cheap toolkit to sell $2,000 AI subscriptions

TerminalFix: PNG Steganography, (Mon, Sep 21st)

Microsoft Security Research published an interesting blog post "TerminalFix campaign deploys a reverse tunnel through multistage intrusion" about a malware campaign. The aspect that I want to take a closer look at, is the fact that the threat actors used PNG files with steganography. I reached out to the researchers and they kindly shared the IOCs for the PNG files with me. The first image is a small PNG file (f5f1eb6d43dd61d5b069c250e5c666384f7417d0c95014773bf9edf8ff13bebe). Analysis with…

Microsoft US

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· SANS Internet Storm Ctr. · TerminalFix: PNG Steganography, (Mon, Sep 21st)

Don’t Call Us, We’ll Call Your APIs | TraderTraitor Backdoors Resurface on Victim With No Crypto Ties

Executive Summary Following disclosure of the TraderTraitor attack against LayerZero in April 2026, SentinelOne identified an additional victim with the same macOS backdoors. Our analysis explores the mechanics of these backdoors and the expanded targeting against a victim in the IT services sector with no relationship to cryptocurrency trading. We also identified more weaponized GitHub repositories from the social engineering schemes used to target job seekers in these campaigns. This report…

Apple Terraform GitHub US

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· SentinelLabs · Don’t Call Us, We’ll Call Your APIs | TraderTraitor Backdoors Resurface on Victim With No Crypto Ties

Fake parcel delivery messages steal your card and bank details

Parcel delivery phishing campaigns appear around the world under different courier names. In the United States, the messages commonly impersonate USPS and claim that a package has an invalid address or could not be delivered. Similar messages impersonate Colissimo and Chronopost in France, Correos in Spain, Poste Italiane in Italy, and PostNL in the Netherlands. The details vary, but the aim is usually the same: to persuade you to visit a fake courier website and provide personal and financial…

doprava US

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· Malwarebytes Labs · Fake parcel delivery messages steal your card and bank details

SPOJENO PŘES CVE TSUBAME Report Overflow (Apr-Jun 2026)

This TSUBAME Report Overflow series discusses observation trends from TSUBAME sensors both in Japan and overseas, as well as other topics not covered in the JPCERT/CC Quarterly Report. This article covers monitoring results from April to June 2026. Note: Starting in FY2026, the JPCERT/CC Internet Threat Monitoring Report has been integrated into the JPCERT/CC Quarterly Report. Sharp Increase in Mirai-like Packets Targeting 23/TCP Observed in Early May 2026 In early May 2026, TSUBAME observed a…

KEV ✓ · ransomware EPSS 0.99 CVSS 9.8 CVE-2026-41940 cPanel JP HR

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· JPCERT/CC – blog · TSUBAME Report Overflow (Apr-Jun 2026) · CERT.hr · Upozorenje: Kritična ranjivost u cPanel i WHM (CVE-2026-41940)

North Korean hackers infect thousands of devices across 100 countries as part of ‘WaterPlum’ campaign

The FBI and Defense Department partnered with Japan’s National Police Agency and law enforcement agencies in Australia and Germany on a new advisory about “WaterPlum” — a group of cyber actors allegedly stealing cryptocurrency from job applicants by posing as AI or blockchain companies.

US

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· The Record · North Korean hackers infect thousands of devices across 100 countries as part of ‘WaterPlum’ campaign

Revolut phishing texts appear days after data breach

Only days after Revolut acknowledged that it disclosed sensitive customer records to an unauthorized party, affected customers are receiving phishing texts. However, we don’t know yet if the phishing texts are linked to the breach. The company had accepted fraudulent information requests sent from an email address on a legitimate government agency domain. Through this social engineering attack, rather than by gaining access to Revolut’s systems, the criminals obtained the following types of…

Revolut finance US

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· Malwarebytes Labs · Revolut phishing texts appear days after data breach

The Odyssey and trojans again: MovieReaper attacks users in multiple countries via compromised torrents

Introduction Torrent trackers have long been abused for distributing malicious software, disguised as popular films, games, and other content. Our previous research has shown that cybercriminals repeatedly turn torrents as an initial infection vector, using trojanized cracks and installers to reach a large number of users. Installation guides for pirated software routinely instruct users to disable their antivirus, conditioning them to ignore potential threats they are inviting onto their…

RU

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· Securelist (Kaspersky) · The Odyssey and trojans again: MovieReaper attacks users in multiple countries via compromised torrents

T-Mobile rewards points expiry texts are a phishing scam

Since early May 2026, we’ve been monitoring a large phishing campaign based on T-Mobile rewards points. The messages falsely warn that a customer’s rewards points are about to expire. They aren’t legitimate account notices: They use urgency, invented point balances, and phishing links to push recipients into acting before they can verify the claim. A typical message says that a T-Mobile Rewards account holds 18,400 points, gives an imminent expiry date, and states that unused points will be…

T-Mobile telekomunikace US

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· Malwarebytes Labs · T-Mobile rewards points expiry texts are a phishing scam

Scans Targeting Hospitality Applications, (Wed, Sep 16th)

Earlier today, I noted an odd request showing up in our "First Seen" report: GET /PIAF-HMS/ HTTP/1.1 Host: [redacted] User-Agent: Farez-Sorter/1.0 Accept-Encoding: gzip This request is linked to a rather old application, a "PBX in a Flash Hospitality Management System" [1]. The last update, the addition of a license file, happened 10 years ago, and I would consider the project abandoned. However, I also noted a new vulnerability reported a couple of months ago: An SQL injection issue. A quick…

US

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· SANS Internet Storm Ctr. · Scans Targeting Hospitality Applications, (Wed, Sep 16th)

NightEagle targets Russian companies

Over the past year, our Global Emergency Response Team (GERT) has investigated several incidents involving the NightEagle group (APT-Q-95). This group has been active since at least 2023 and originally focused on organizations in Asia, as we reported previously. We have now identified attacks by the group targeting businesses in Russia. This post examines both known and new tools NightEagle used in its latest campaign. Initial access In most incidents, the attackers used compromised valid…

KEV ✓ · ransomware EPSS 1.00 CVE-2019-0708 CVE-2020-0688 Microsoft RU

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· Securelist (Kaspersky) · NightEagle targets Russian companies

· zachyceno

HBO Max’s verified Reddit account hijacked to spread malware

Researchers at Hudson Rock found that cybercriminals hijacked HBO Max’s verified Reddit account and used it to run 108 malicious ads over roughly 48 hours. The ads used HBO Max’s trusted corporate account to promote fake AI tools, developer software, and macOS utilities, lowering potential victims’ guards. Some ads directed users to convincing HBO lookalike sites that claimed to offer a native HBO Max app for macOS or a promotional download. But instead of providing an installer, the sites…

Reddit HBO média US

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· Malwarebytes Labs · HBO Max’s verified Reddit account hijacked to spread malware

Search results are sending people to fake Bitrefill checkouts

Bitrefill is a legitimate company that sells gift cards for popular stores like Amazon, Deliveroo, Apple, Nintendo, and thousands of others. They also sell eSIMs, and mobile top-ups. You can pay on their website for all of these with cryptocurrency. The scam is designed to catch people searching for Bitrefill or something it sells, like a gift card. Victims see a search result that appears to lead to Bitrefill but actually points to a lookalike domain. The fake site then takes them through what…

Bitrefill obchod US

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· Malwarebytes Labs · Search results are sending people to fake Bitrefill checkouts

Upozornění na Device Code Phishing

Upozorňujeme na phishingovou kampaň zneužívající autentizační mechanismus Device Code Flow. Útočník pod záminkou připojení ke schůzce nebo videohovoru přes legitimní nástroje přiměje uživatele k autorizaci a přes kontrolovanou relaci dochází ke krádeži přístupového tokenu a následné kompromitaci uživatele.Device Code FlowDevice Code Flow je autentizační mechanismus navržený pro případy, kdy se uživatel přihlašuje na zařízení s omezenými možnostmi zadávání přihlašovacích údajů, například na…

Microsoft CZ

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· NÚKIB · Upozornění na Device Code Phishing