**Hacker Pranks Exclusive: Uncovering the Microsoft Flaw that Could Have Led to Account Takeovers**

In a shocking revelation, bug hunter Khaled Mohamed stumbled upon a critical vulnerability in Microsoft Authenticator that could have led to account takeovers on both iOS and Android devices. The flaw, identified as CVE-2026-26123, was discovered through a series of experiments and investigations by Mohamed, who will be sharing his story with us today.

Mohamed's journey into cybersecurity began at the tender age of 15, when he started taking freelance projects in web application penetration testing. His early forays into hacking were marked by trial and error, but it wasn't until he pursued a degree in Computer Science that he truly understood the science behind cybersecurity. Today, Mohamed is a respected security engineer and bug bounty hunter with numerous high-profile companies under his belt.

We had the opportunity to sit down with Khaled Mohamed and discuss the events leading up to the discovery of CVE-2026-26123. According to Mohamed, the vulnerability wasn't specifically targeted; rather, it was a chance observation that sparked further investigation.

"I noticed something unusual in the way the app handled deep links and sign-in flows on mobile devices," Mohamed explained. "When you tap a sign-in link or scan a QR code, the operating system prompts you to 'Open Link.' That made me curious. What would happen if a different app intercepted that action?"

Mohamed's curiosity was well-placed, as it led him to discover that a malicious application could intercept and exploit sign-in codes, even in cases where two-factor authentication (2FA) or passwordless sign-in flows were enabled.

"The potential real-world impact on multi-factor authentication and passwordless sign-in flows was significant," Mohamed noted. "I genuinely underestimated the vulnerability's severity."

So what can aspiring bug hunters and cybersecurity enthusiasts take away from Khaled Mohamed's story?

"Always think like an attacker and train your mindset to identify the potential impact behind every action," Mohamed advises. "Your technical knowledge is just a tool: use it to achieve the impact you've envisioned. Test everything yourself, don't assume something is secure just because others have tested it before."

Mohamed also cautions against underestimating the threat level in cybersecurity.

"Many organizations still believe that cyberattacks are rare events or that attackers primarily target large, well-known corporations," he said. "In reality, every company can become a target, regardless of size or reputation."

The discovery and responsible disclosure of CVE-2026-26123 is a testament to the importance of bug hunting and vulnerability research in keeping our digital ecosystem safe.

"Responsible disclosure works," Mohamed emphasized. "Microsoft responded through their Coordinated Vulnerability Disclosure program, and the patch was released as part of the March 10, 2026 security update."

In conclusion, Khaled Mohamed's story is a shining example of what can be achieved when curiosity meets technical expertise. His experience serves as a reminder that responsible disclosure is key to keeping our digital world safe from threats.

**Staying Safe in the Digital Age**

As always, we remind our readers to prioritize mobile security and take proactive steps to protect their devices from malware and other cyber threats. Download Malwarebytes for iOS and Android today to keep your phone secure.

**About the Author:** Khaled Mohamed is a 23-year-old security engineer and bug bounty hunter with numerous high-profile companies under his belt. He has been listed in the Halls of Fame of several major companies, including Google, GitHub, LinkedIn, Mastercard, Starbucks, and Vimeo.

**Related Topics:**

* Bug Bounty Hunting * Vulnerability Research * Cybersecurity Risks * Account Takeovers * Multi-Factor Authentication * Passwordless Sign-in Flows

**Disclaimer:** The views expressed in this article are those of the author and do not reflect the opinions of Malwarebytes or its affiliates.