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CRITICAL CISCO ISE VULNERABILITIES ALLOW REMOTE CODE EXECUTION

Cisco announced fixes for two critical (CVSS 10/10) vulnerabilities in its Identity Services Engine (ISE) and ISE Passive Identity Connector, which could allow unauthenticated remote code execution (RCE). The first vulnerability is caused by a lack of input validation, which allows unauthenticated attackers to submit crafted API requests and execute arbitrary code with root privileges. The second vulnerability is caused by a lack of file validation, which could allow an attacker to store malicious files in arbitrary directories on the device.

2025.06.27
securityweek.com2 min readTLDR InfoSec

HACKERS TURN SCREENCONNECT INTO MALWARE USING AUTHENTICODE STUFFING

Cybersecurity firm G DATA is warning users of ConnectWise's ScreenConnect remote monitoring and management (RMM) software about a new malware campaign that utilizes ScreenConnect installers with a malicious configuration embedded in the authenticode certificate. The malicious installer is configured to have the title “Windows Update,” change the background to a Windows Update image, and connect to an attacker-controlled server. ConnectWise has revoked the certificates used in these binaries.

2025.06.27
bleepingcomputer.com2 min readTLDR InfoSec

GLASGOW COUNCIL SERVICES REMAIN OFFLINE A WEEK AFTER CYBER ATTACK

Glasgow City Council suffered a cyberattack on June 19 via IT supplier CGI's third-party servers, disrupting online services including planning applications, payments, and pension portals. Customer data may have been stolen, but the confirmation has not yet been made.

2025.06.27
computerweekly.com2 min readTLDR InfoSec

CYBERCRIMINALS ABUSE OPEN-SOURCE TOOLS TO TARGET AFRICA'S FINANCIAL SECTOR

Threat actor CL-CRI-1014 has been targeting African financial institutions since July 2023. The attackers use open-source tools (PoshC2, Chisel, and Classroom Spy) and forge file signatures to establish network access. The group operates as initial access brokers, selling compromised financial institution access on darknet markets.

2025.06.27
unit42.paloaltonetworks.com7 min readTLDR InfoSec

MARKETPLACE TAKEOVER: HOW WE COULD'VE TAKEN OVER EVERY DEVELOPER USING A VSCODE FORK; PUTTING MILLIONS AT RISK

Security researchers have discovered a critical vulnerability in open-vsx.org, the open-source VS Code extensions marketplace used by over 8 million developers across popular editors such as Cursor, Windsurf, and VSCodium. The flaw allowed attackers to steal admin credentials through a CI pipeline issue, enabling them to publish malicious updates to every extension on the marketplace and potentially compromise millions of developer machines. The vulnerability was responsibly disclosed in May and patched after multiple iterations over several weeks.

2025.06.27
blog.koi.security7 min readTLDR InfoSec

5 YEARS, 160 COMMENTS, AND THE VULNERABILITY THAT REFUSED TO DIE

Jonathan Leitschuh discovered an old vulnerability in SnakeYAML that could enable remote code execution through unsafe deserialization. The maintainer initially closed the report as “Won't Fix,” claiming a safe constructor made the code safe. After a lengthy discussion, PoCs, data, and a nearly hour-long call, Leitschuh convinced the maintainer to use the secure constructor by default and make insecure behavior opt-in, marking a win for secure defaults in SnakeYAML 2.0.

2025.06.27
links.tldrnewsletter.com8 min readTLDR InfoSec

BONFY (PRODUCT LAUNCH)

Bonfy provides AI governance solutions that detect and prevent risks in enterprise content, ensuring secure and compliant use of generative AI across organizations.

2025.06.27
bonfy.aiTLDR InfoSec

OBFUSK8

Obfusk8 is a C++17 header-only library designed to obfuscate binaries through a complex set of compile-time and runtime techniques.

2025.06.27
github.comGitHub repositoryTLDR InfoSec

YARA-X IS STABLE

The YARA team has officially announced the first stable release of YARA-X and moved the original YARA project into maintenance mode.

2025.06.27
virustotal.github.io2 min readTLDR InfoSec

IRANIAN HACKERS ARE TRYING TO CREATE A PSYCHOLOGICAL WAR IN CYBERSPACE

A new report by cybersecurity agency DomainTools alleges that the Iranian-backed CyberAv3ngers group is shifting its operations to focus on misinformation and psychological warfare. The CyberAv3ngers have been active since 2023, and while they have been tied to confirmed intrusions, they have also claimed targets that have been debunked. According to the report, the group has refined cyber activity “into a fully realized propaganda apparatus” with the goal of not just breaching systems but “to control the narrative surrounding those breaches.”

2025.06.27
nextgov.com2 min readTLDR InfoSec

QILIN RANSOMWARE ATTACK ON NHS SUPPLIER CONTRIBUTED TO PATIENT FATALITY

The NHS confirmed a patient died following Qilin's ransomware attack on pathology provider Synnovis. A delayed blood test result due to disrupted services contributed to the death. The attack affected multiple London NHS trusts, harming 170 patients in total. This represents a rare confirmed link between ransomware and patient mortality.

2025.06.27
theregister.com4 min readTLDR InfoSec

WINDOWS KILLED THE BLUE SCREEN OF DEATH

Microsoft is replacing Windows' iconic Blue Screen of Death with a Black Screen of Death nearly 40 years after its introduction. The change is part of the Windows Resiliency Initiative following the CrowdStrike outage that affected 8.5 million devices. Microsoft calls it a "simplified UI" but hasn't acknowledged the significance of ending this computing era.

2025.06.27
techcrunch.com2 min readTLDR InfoSec

Sponsored

HAS FILE INTEGRITY MONITORING HIT A DEAD END?

Traditional File Integrity Monitoring (FIM) often becomes shelfware. Daily polling scans generate endless notifications without context — and as an added bonus, they're so resource-intensive that you can't actually run them in real time.

2025.06.26
offers.cimcor.comSponsorTLDR InfoSec

NEW WORDPRESS MALWARE HIDES ON CHECKOUT PAGES AND IMITATES CLOUDFLARE

The May 2025 WordPress Core malware campaign, discovered by Wordfence, has three versions: one steals credit card data from checkout pages while mimicking Cloudflare security screens, another hijacks Google Ads and steals login credentials, and the third spreads more malware by replacing website links. Since September 2023, all have been disguised as legitimate plugins and employ advanced anti-detection methods, including hosting management systems on infected sites.

2025.06.26
hackread.com2 min readTLDR InfoSec

MAINLINE HEALTH, SELECT MEDICAL EACH DISCLOSE DATA BREACHES IMPACTING 100,000 PEOPLE

Two major healthcare data breaches have been disclosed. Mainline Health Systems (Arkansas) suffered a ransomware attack by the Inc. Ransom group in April 2024, affecting over 101,000 individuals with stolen sensitive files. Select Medical Holdings (Pennsylvania) was impacted by a vendor breach at Nationwide Recovery Services that exposed nearly 120,000 people's data.

2025.06.26
securityweek.com2 min readTLDR InfoSec

MILLIONS OF BROTHER PRINTERS HIT BY CRITICAL, UNPATCHABLE BUG

Rapid7 discovered eight vulnerabilities that affect 748 printer models from five vendors, with Brother accounting for 689 affected devices. The critical flaw CVE-2024-51978 (CVSS 9.8), which allows attackers to generate default admin passwords using device serial numbers, cannot be firmware-patched.

2025.06.26
links.tldrnewsletter.com3 min readTLDR InfoSec

FREQUENT REAUTH DOESN'T MAKE YOU MORE SECURE

Low session expiration times frustrate users and don't effectively improve security. Frequent reauthentication aims to prevent credential theft, but if attackers have physical access, a screen lock suffices, and if remote, expiration times are often too long to prevent breaches. Instead, systems should reauthenticate only before sensitive actions and use continuous verification like device checks and SCIM controls.

2025.06.26
tailscale.com4 min readTLDR InfoSec

LEAKING SECRETS IN THE AGE OF AI

Researchers found that AI-related secrets dominate public code repository leaks, comprising 4 of the top 5 vulnerable secret types. The three main sources are Python notebook files, AI agent config files, and new AI vendor secret types that scanners overlook. Valid secrets from more than 30 companies, including Fortune 100 firms, were found, highlighting poor AI development security practices.

2025.06.26
wiz.io8 min readTLDR InfoSec

VULNERABLE VS. EXPLOITABLE: WHY UNDERSTANDING THE DIFFERENCE MATTERS TO YOUR SECURITY POSTURE

Horizon3.ai suggests security teams should prioritize "exploitability" over "vulnerability," as many weaknesses can't be exploited in real-world scenarios. Their NodeZero platform conducted over 50,000 pentests in 2024, uncovering 765,000 critical exploitable paths and showing attackers can gain domain admin access in 60 seconds by chaining vulnerabilities and misconfigurations. They recommend continuous autonomous testing rather than annual assessments, with 82% of their customers now testing monthly compared to 26% of organizations testing more than once yearly.

2025.06.26
links.tldrnewsletter.com5 min readTLDR InfoSec

OKTAGINX

OktaGinx is an Evilginx phishlet that bypasses Okta authentication chained with Azure.

2025.06.26
github.comGitHub repositoryTLDR InfoSec

INTELOWL

IntelOwl is an Open-Source solution for managing Threat Intelligence at scale. It integrates several analyzers available online and many cutting-edge malware analysis tools.

2025.06.26
github.comGitHub repositoryTLDR InfoSec

WSUKS

The "wsuks" tool automates man-in-the-middle attacks on Windows Server Update Service (WSUS) configs using HTTP instead of HTTPS. It uses ARP spoofing to impersonate the WSUS server. It serves malicious updates with PsExec64.exe and PowerShell scripts that run as SYSTEM to create local admin users or add domain users to the local administrators group.

2025.06.26
github.comGitHub repositoryTLDR InfoSec

MICROSOFT MAKES WINDOWS 10 EXTENDED SECURITY UPDATES FREE, BUT THERE'S A CATCH

Microsoft has announced a new method for consumers to enroll their Windows 10 devices in the free Extended Security Updates (ESU) program. The method requires users to enable Windows Backup to sync settings and folders to the cloud. If a user has more than 5GB of data to sync, they must purchase additional space for Windows Backup to work and claim the free ESU enrollment. Users can also enroll in the program by paying $30 or redeeming 1K Microsoft Reward points for a year of updates.

2025.06.26
theverge.com2 min readTLDR InfoSec

FRENCH POLICE REPORTEDLY ARREST SUSPECTED BREACHFORUMS ADMINISTRATORS

French authorities detained five suspected BreachForums operators, including known cybercriminals ShinyHunters, IntelBroker, Hollow, Noct, and Depressed, who allegedly ran the stolen data marketplace and targeted French companies. They tried to revive BreachForums after its earlier 2023 shutdown following the founder "pompompurin's" arrest.

2025.06.26
therecord.media2 min readTLDR InfoSec

Sponsored

VIDEO: HOW WE BLOCKED A RANSOMWARE ATTACK

Attackers used stolen domain admin credentials to infiltrate a hospital network - aiming to deploy remote access tools, steal sensitive data, and unleash ransomware.

2025.06.25
threatlocker.comSponsorTLDR InfoSec

SPARKKITTY SWIPES PICS FROM IOS, ANDROID DEVICES

SparkKitty is a new mobile malware that harvests photos from users' devices. The malware is delivered via fake or trojanized applications on the App Store and a trojanized version of the TikTok app that users are prompted to install via an Enterprise profile. Once installed, the apps prompt users to grant the app access to their galleries and then exfiltrate images to extract crypto seed phrases.

2025.06.25
links.tldrnewsletter.com3 min readTLDR InfoSec

NEW FILEFIX ATTACK WEAPONIZES WINDOWS FILE EXPLORER FOR STEALTHY COMMANDS

FileFix, a variant of ClickFix attacks, is a new social engineering attack vector on Windows devices. In ClickFix attacks, a user is prompted by a website to execute a copied command in PowerShell to fix a bogus error. However, in the FileFix attacks, the user just needs to paste the command in the Windows File Explorer address bar, which is a much more familiar environment. The FileFix ruse informs users that a file was shared with them and prompts them to click a button that will launch File Explorer and copy a PowerShell command that contains a file path in a PowerShell comment to the clipboard. When the command is pasted into the File Explorer address bar, only the path will be displayed.

2025.06.25
bleepingcomputer.com2 min readTLDR InfoSec

THREAT HUNTING INTRODUCTION: COBALT STRIKE

Cobalt Strike servers can be found online by scanning for their distinctive HTTP response signatures - specifically 404 Not Found responses with zero content length and text/plain content type. Researchers can download executable payloads from these servers using checksum-based URLs (like /tdN6 for x86 or /ZrJG for x64) and extract encrypted configuration metadata that reveals how red teams and malicious actors configure their command-and-control infrastructure. This post provides a Rust tool called SigStrike to automate this discovery and analysis process at scale across millions of potential servers.

2025.06.25
rushter.com8 min readTLDR InfoSec

NO AGENT, NO PROBLEM: DISCOVERING REMOTE EDR

The Performance Logs and Alerts DLL holds various DCOM interfaces that allow someone to interact remotely with Event Tracing for Windows (ETW) providers, trace sessions, configurations, etc. This post demonstrates how these capabilities can be used to detect various attacks without an agent and suggests ways that an attacker can use them to maintain stealthy persistence.

2025.06.25
jonny-johnson.medium.com15 min readTLDR InfoSec

AUTOMATICALLY PRIORITIZE SECURITY ISSUES FROM DIFFERENT TOOLS WITH AN LLM

Security issue prioritization is a complex and time-consuming process that takes away time from resolving issues. This blog post proposes three scoring strategies that an LLM can use to rank security issues to combat this. The first strategy is to have the LLM assign a score based on provided criteria to each issue and sort the issues based on that score. The second strategy is to have the LLM use bubble sort and compare each issue pair-wise, which is more thorough than the first strategy but slower. The third strategy is to use an Elo system where a random sampling of issues is compared.

2025.06.25
plerion.com10 min readTLDR InfoSec

UNEXPECTED SECURITY FOOTGUNS IN GO'S PARSERS

Go's parsers for JSON, XML, and YAML have risky default behaviors such as case-insensitive fields, duplicate key acceptance, and lenient garbage data handling, which attackers can exploit to bypass security. These differences lead to conflicting interpretations across services processing the same input, causing vulnerabilities like CVE-2020-16250 in HashiCorp Vault. The new JSON v2 spec aims to fix these with secure defaults, but current measures rely on custom validation and static analysis.

2025.06.25
blog.trailofbits.com15 min readTLDR InfoSec

Sponsored

SECURITY QUESTIONNAIRES TAKING 3+ HOURS? THIS AI CUTS IT TO 15 MINUTES

Tired of spending hours answering the same security questions while deals languish in the pipeline? SafeBase [11] attacks this from both ends: Trust Centers let prospects self-serve your security docs upfront; if they still have questions, AI Questionnaire Assistance generates accurate responses from your existing documentation. See a

2025.06.25
safebase.ioSponsorTLDR InfoSec