The Facebook logo. The site says it has stepped up its efforts to battle terrorism. Photo: WikiCommons.

Hours after the December shootings in San Bernardino, Calif., Mark Wallace asked his employees at the nonprofit Counter Extremism Project to comb social media for profiles of the alleged attackers.

They failed. A team at Facebook Inc. has already removed a profile for Tashfeen Malik, after seeing her name in news reports.

Read full story at The Wall Street Journal.