Vijay Tank — Tech, Code & Game Dev

In December 2015, cybersecurity advocates identified a severe data exposure flaw on the Corporation of Chennai's official web portal, where birth and death certificates dating as far back as 1910 were accessible to the public without authentication or rate limiting. An Unprotected Query Interface Because the municipal database endpoint lacked user access controls, anyone could query arbitrary registration dates and download sensitive citizen birth records containing full names, parentage, residential addresses, and hospital records as PDF documents. A Wake-Up Call for Municipal Cybersecurity Birth records are foundational documents used for passport issuance, school admissions, and financial verification in India. The exposure underscored the critical necessity for robust access control, input validation, and security auditing across government digital service portals during India's nationwide digital transformation drive.

In late December 2015, Google confirmed experimental trials of a password-free account authentication system that allowed users to log into their Google accounts on desktop browsers using their smartphones as primary authentication tokens. How Smartphone Push Logins Worked Rather than typing a password, a user attempting to sign in on a computer received an instant push notification on their registered smartphone asking, "Trying to sign in?" A simple tap of confirmation on the mobile device securely authenticated the desktop session. If the phone was unavailable, users could fall back to standard password entry. Pioneering the Road to Passkeys Traditional passwords had long proven vulnerable to phishing, brute-force attacks, and credential reuse. Google's 2015 smartphone-based approval system represented an early milestone in the broader industry movement toward passwordless authentication, which has since culminated in modern FIDO2 and biometric passkey standards acr...

In December 2015, cybersecurity researchers Hector Marco and Ismael Ripoll from the Universitat Politècnica de València disclosed a surprisingly simple vulnerability in the GNU GRUB2 bootloader: pressing the backspace key exactly 28 times at the login prompt could grant root-level access to a locked Linux system. An Integer Underflow in Memory The flaw had existed in GRUB code since version 1.98 (released in December 2009) through version 2.02. When a user pressed backspace 28 consecutive times on an authenticated boot prompt, an integer underflow error corrupted memory structures in the bootloader. This caused the system to abort password validation and drop directly into the powerful GRUB rescue shell. Physical Security Realities From the rescue shell, an attacker with physical machine access could read unencrypted hard drives, deploy malware from a connected USB drive, or overwrite system partition tables. The researchers published remediation patches immediately, reminding syst...

In November 2015, an unintended consequence of automated content moderation came to light when Facebook erroneously disabled the personal account of San Francisco-based software engineer Isis Anchalee. The suspension occurred after automated filtering systems flagged her first name, confusing it with the acronym used for the extremist group ISIS. The Ordeal and Viral Appeal Despite submitting passport identification and verification documents, Anchalee remained locked out of her account for over a day until she shared screenshots of the lockout on social media. The incident quickly went viral within the developer community, prompting a public apology from Facebook and immediate account restoration. Lessons for Automated Moderation Systems The episode highlighted the real-world pitfalls of rigid algorithmic keyword matching. For internet platforms managing billions of user accounts, the case demonstrated why human-in-the-loop review mechanisms and nuanced linguistic context are esse...

In October 2015, cybersecurity researchers at Zimperium zLabs disclosed "Stagefright 2.0," a secondary set of critical vulnerabilities in Android's media playback engine (libstagefright) that left over one billion Android devices susceptible to remote code execution. The Attack Vector: Audio and MP4 Files While the initial Stagefright vulnerability discovered in July 2015 was delivered via MMS video messages, Stagefright 2.0 could be triggered simply by previewing an innocent-looking MP3 audio or MP4 video file inside a web browser or third-party media app. The crafted media file exploited integer overflow flaws during metadata processing, giving attackers elevated privileges on the target device. Catalyst for Monthly Security Updates The Stagefright disclosures exposed severe structural delays in how Android OEM manufacturers and telecom carriers deployed security patches. In direct response to the crisis, Google, Samsung, and LG established mandatory monthly Android...

Shortly after the public rollout of iOS 9 in September 2015, independent security researcher Jose Rodriguez uncovered a significant lock screen bypass flaw that allowed physical access to a user's contacts and photo library without entering the device passcode. How the Vulnerability Operated The exploit relied on a flaw in how the lock screen interacted with Siri and the Clock app. By entering incorrect passcodes and invoking Siri at a specific timing interval, an attacker could trigger accessibility and search features that revealed the device's Address Book. From the contacts interface, an unauthorised user could browse photos, email addresses, and phone numbers without authenticating. Mitigation and Patching Security analysts advised users to temporarily disable lock-screen Siri access in device settings while Apple developed a software update. The incident underscored an ongoing challenge in mobile security design: balancing lock-screen voice convenience with strict dat...