Due to the recent allegations that U.S. troopes traded photographs of dead Iraqis to an American adult website in order to gain access to the site, the Pentagon has tightened guidelines governing the use of photography, e-mail, Web logs, and other electronic media by U.S. troops in Iraq and Afghanistan.

In an effort to avoid such violations in the future, commanders have updated the rules for using the Internet and other communications technologies such as digital cameras, which have captured the brutal reality on the ground in Iraq like perhaps no previous conflict. A bulletin issued yesterday to US troops in Iraq and Afghanistan outlined new ''Internet security" guidelines. Among other things, the one-page memo warned troops against posting ''any photographs on any websites," according to a report in the Boston Globe.