Bob Lord will join Yahoo as its CISO.

Lord has more than 20 years of experience in the information security space, including most recently as the CISO-in-Residence at Rapid 7. Prior to that, Lord led Twitter’s information security program and held positions in product and information security at companies such as Red Hat, AOL, and Netscape.

Lord will lead Yahoo’s security team -- known as the Paranoids -- in offensive and defensive protection of the company’s more than one billion users around the world, and for Yahoo’s employees globally. Yahoo said that Lord will work across all of the company’s teams and collaboratively within the industry, as well.