Kalshi, a prediction market that allows people to bet on future events, has raised a massive $1 billion round at a $11 billion valuation, according to a person familiar with the deal. The round comes less than two months after the seven-year-old startup announced its previous fundraise of $300 million at a $5 billion valuation….
Oct 20, 2025Ravie LakshmananBrowser Security / Malware Cybersecurity researchers have uncovered a coordinated campaign that leveraged 131 rebranded clones of a WhatsApp Web automation extension for Google Chrome to spam Brazilian users at scale. The 131 spamware extensions share the same codebase, design patterns, and infrastructure, according to supply chain security company Socket. The browser…
U.S. cybersecurity company F5 on Wednesday disclosed that unidentified threat actors broke into its systems and stole files containing some of BIG-IP’s source code and information related to undisclosed vulnerabilities in the product. It attributed the activity to a “highly sophisticated nation-state threat actor,” adding the adversary maintained long-term, persistent access to its network. The…
