Craig Newmark, the founder of online classified-ads site Craigslist, thinks the U.S. has a cybersecurity problem.

Craigslist founder Craig Newmark believes hacking by foreign governments is a major risk to the U.S. and plans to donate $100 million to bolster the country’s cybersecurity. Half the money will go toward protecting infrastructure such as power grids from cyberattacks.

Craig Newmark, the 71-year-old retired founder of Craigslist, has four focus areas for philanthropy: military families and vets, cybersecurity, journalism, and pigeon rescue. On Wednesday, he pledged $100 million to support U.