Comedian Ari Shaffir performs at the 2015 Bonnaroo Music and Arts Festival in June in Manchester, Tenn. Shaffir has said fellow comedian Carlos Mencia stole his joke about who would build a fence on the U.S.-Mexican border. Copyright on jokes is difficult to prove, and it turned out two other comedians had made similar jokes as well. John Davisson/Invision/AP hide caption

itoggle caption John Davisson/Invision/AP

Greg Gianforte is distributing a brochure urging workers to "come home to Montana" and telework from there. Marianne Wiest/BetterMontanaJobs.com hide caption

itoggle caption Marianne Wiest/BetterMontanaJobs.com

To selfie, or not to selfie? iStockphoto hide caption

itoggle caption iStockphoto

A security gap on Android, the most popular smartphone operating system, was discovered by security experts in a lab and is so far not widely exploited. iStockphoto hide caption

itoggle caption iStockphoto

Wall graffiti at Facebook headquarters in Menlo Park, Calif. The company released a diversity report last month showing that 70 percent of employees are male; African-Americans comprise 2 percent of it workforce. Robyn Beck/AFP/Getty Images hide caption

itoggle caption Robyn Beck/AFP/Getty Images

The Harwell Dekatron Computer in Bletchley Park is one of the massive machines used by Matt Parker in his Imitation Archive music. Courtesy of the National Museum of Computing hide caption

itoggle caption Courtesy of the National Museum of Computing

A helicopter flies near the Lake Fire in California's San Bernardino National Forest on June 19. Firefighters mobilized to combat the wildfire from the air, but they had to be grounded to avoid drones in the area. David McNew/Reuters/Landov hide caption

itoggle caption David McNew/Reuters/Landov

The Naval Posgraduate School's Timothy Chung stands with the unmanned aerial vehicles his team attempted to swarm in May, 2015. That day they were able to launch 20 into a swarm. After a second attempt in July, they got 30. Krista Almanzan/KAZU hide caption

itoggle caption Krista Almanzan/KAZU

Security experts' and non-experts' top security practices, according to Google's survey. Google Online Security Blog hide caption

itoggle caption Google Online Security Blog