Phone hacking isn't always obvious. Discover the common signs of a compromised device and the steps experts recommend taking.

Learn how to protect yourself from SIM swap scams and phone number hacking after repeated account takeovers, including steps to secure your carrier.

Forbes contributors publish independent expert analyses and insights. Zak Doffman writes about cybersecurity, surveillance and privacy. New Yorkers have just been warned to beware an attack that has ...