If so-called "cyber jihadists" want to launch another social media attack on America's military, they will have plenty of targets: the U.S. Army alone lists more than 2,000 links to feeds on Facebook, Twitter, YouTube and other accounts.
In the wake of Monday's breach of U.S. Central Command's Twitter and YouTube feeds by apparent sympathisers of the Islamic State, U.S. officials updated passwords and some distributed tip-sheets to help bolster online security.
The U.S. Department of Defence has "thousands and thousands" of social media accounts, said Colonel Steve Warren, a Pentagon spokesman. They are seen as a fast and effective way for the U.S. military to communicate with its own personnel and families about everything from on-base social events to power outages.
"We are certainly looking at our systems and will refine them as needed," said Colonel Warren.
Although a review of the incident was under way, he said, there had been no specific department-wide instructions issued since Monday to strengthen security across social media.
