CyberPro

ToolShell Unleashed: How Warlock Ransomware Hijacked SharePoint Through Zero-Day Backdoors Microsoft has confirmed active exploitation of two SharePoint zero-day flaws- CVE-2025-53770 (RCE) and CVE-2025-53771 (spoofing)- now known as the ToolShell exploit chain , used by China's Storm-2603 to deploy Warlock ransomware .This isn’t theoretical. Eye Security reports breaches at 145 organizations. Shadowserver is tracking over 420 unpatched on-prem SharePoint servers. If you're not patched or monitoring traffic- you may already be compromised . As a penetration tester and blogger, here’s the takeaway: platforms like SharePoint are no longer internal safe zones. They are ransomware gateways . ToolShell enables stealth access, lateral movement, and devastating payload delivery.

The Silent Browser Breach - How Fake VPN Chrome Extensions Are Compromising Enterprises Imagine installing a “VPN” extension to enhance privacy-only to learn it’s the secret tunnel snooping on you. A sprawling campaign of over 100 malicious Chrome extensions, masquerading as VPNs, AI tools, and crypto utilities, has been uncovered. These extensions - available through the Chrome Web Store - lured users with legitimate functionality while secretly operating as spyware. Once installed, they siphoned cookies, harvested session tokens, injected remote code, and manipulated web traffic - all under the guise of trusted services.

Behind the ‘I’m Not a Robot’ Lie: Cybercrime’s New Entry Point As a part time penetration tester and independent blogger, I treat fake CAPTCHAs as conversion exploits-not bugs. On August 14, 2025 , the VexTrio syndicate is pairing fake “I’m not a robot” gates with mobile-app fraud and adtech-style routing to turn human clicks into compromise, subscriptions, and data theft at scale. Multiple reports confirm VexTrio’s traffic distribution system (TDS) now stretches from hijacked web journeys to fake VPN/spam-blocker apps in official stores, extending monetization beyond a single browser session. What’s New Today (and Why It Matters) Coverage in the last week ties VexTrio-linked developer accounts to Apple and Google app stores , where “utility” apps (VPNs, cleaners, spam blockers) act as data siphons and subscription traps. This complements ongoing fake CAPTCHA/ClickFix campaigns that trick users into granting browser notifications, copying commands, or installing “security upgrades.” T...

The Human Zero-Day: Inside the Allianz Life Salesforce Breach The breach didn’t start with a firewall alert it began with a phone call. A calm voice claiming to be “Salesforce IT” opened the door to millions of leaked Allianz Life records, bypassing technical defenses through vishing and identity manipulation. This is part of a growing 2025 campaign targeting Salesforce environments at global brands, proving that in the cloud era, the human layer is the new high-value perimeter. From my seat in the pen testing world, the attacker’s playbook is all too familiar reconnaissance, believable pretexts, exploiting weak helpdesk workflows, and quietly extracting data. In the wrong hands, that same discipline becomes a weapon for extortion and supply-chain compromise. What Happened Today (and Why It Matters) Attackers leaked 2.8 million records allegedly linked to Allianz Life as part of continuing Salesforce data theft attacks . This disclosure lands within a broader set of incidents attribut...

Click, and You’re Compromised: How “ClickFix” Turns Trust into the Ultimate Attack Vector It begins with a harmless click on a Windows dialog box. No phishing email, no suspicious download just one click. Yet, this triggers the ClickFix technique, transforming routine user behavior into an attacker’s master key. By chaining interface tricks with privilege escalation, ClickFix bypasses defenses millions rely on daily.AI-driven automation can now weaponize this exploit at scale; state-sponsored groups integrate it into espionage; ransomware affiliates deploy it to stealthily infiltrate enterprises. For penetration testers, ClickFix is not theoretical-it’s a call to action to redefine what “safe click behavior” really means. ClickFix Surges-500% Growth in Threat Landscape From late 2024 through mid-2025, ClickFix activity exploded by 517% , making it the second most common vector after phishing- penetrating systems with deceptive prompts and clipboard tricks that slip past antivirus d...

From Utility to Liability: Inside the WinRAR Zero-Day Battlefield Imagine opening your trusted archiver only to learn it's become the weapon. A new zero-day in WinRAR (CVE-2025-8088) lets attackers deliver malware silently through legitimate archive extraction. As a penetration tester, this isn’t just a vulnerability it’s a betrayal by a fundamental tool. This incident reminds us: compromise can emerge from the most trusted places, and threat modeling must follow where utility leads. Unpacking CVE-2025-8088: Why It’s Alarming CVE-2025-8088 is a Windows-specific flaw enabling path traversal during RAR extraction, leveraging libraries like UnRAR.dll. Attackers can place payloads into internal directories such as Startup achieving execution when users log in. The patch, issued in WinRAR version 7.13, is now essential. Exploitation in the Wild: RomCom's Tactical Leverage Security firm ESET confirmed exploitation by the threat group RomCom (UNC2596). Their RAR payloads bypassed filt...