Daily Security Briefing #131

January 11, 2026 | Read Online

Instagram bug fixed amid data leak claims, California bans unregistered health data broker, Microsoft retires Send to Kindle feature

Executive Summary

Recent developments in cybersecurity highlight the ongoing challenges of protecting personal data on social media platforms and regulatory efforts to hold data brokers accountable. Instagram addressed a critical bug that led to concerns over a large-scale scraping of account information. Meanwhile, California’s privacy watchdog has cracked down on a firm illegally selling health data, emphasizing growing enforcement in privacy laws. Additionally, Microsoft announced the retirement of a convenience feature in Word, marking a shift in their document sharing approach. These stories reflect broader trends in data security, privacy regulation, and evolving software features.

Top Articles

Instagram denies breach amid claims of 17 million account data leak
Instagram has resolved a bug that allowed attackers to send mass password reset requests, which sparked reports that data from over 17 million accounts was scraped and leaked. The company denies a breach but acknowledges the flaw has been fixed to protect user accounts from this phishing tactic.
BleepingComputer

California bans data broker reselling health data of millions
The California Privacy Protection Agency took enforcement action against Datamasters for selling personal and health data without registering as a data broker. This move underscores increased regulatory scrutiny aimed at protecting consumer health information under privacy laws in California.
BleepingComputer

Microsoft is retiring ‘Send to Kindle’ in Word
Microsoft announced it is discontinuing the ‘Send to Kindle’ feature in Microsoft Word, which allowed users to send documents directly to Kindle devices. The change impacts users’ document sharing workflows and reflects ongoing updates to the Office software suite.
BleepingComputer

AI Transparency: This newsletter uses AI to curate, rank, and summarize cybersecurity content from leading industry blogs. All articles link directly to original authors. Executive summaries are AI-generated based on article content. I curate the sources and deliver the digest—the original authors deserve the credit for their excellent work.