"So in those cases, the Rules do not clearly identify which court the investigators should bring their warrant application to," Caldwell said.

Hacking multiple computers across the world just got easier for the United States intelligence and law enforcement agencies from today onwards.The changes introduced to the Rule 41 of the Federal Rules of Criminal Procedure by the United States Department of Justice came into effect on Thursday, after an effort to block the changes failed on Wednesday.The change grants the FBI much greater powers to hack into multiple computers within the country, and perhaps anywhere in the world, with just a single warrant authorized by any US judge (even magistrate judges). Usually, magistrate judges only issue warrants for cases within their jurisdiction.That's the same the FBI did in its 2015 investigation into child pornography site Playpen, in which the agency hacked into some 8,700 computers across 120 different countries.The Supreme Court approved the changes to Rule 41 in April, allowing any U.S. judge to issue search warrants that give the FBI and law enforcement agencies authority to remotely hack computers in any jurisdiction, or even outside the United States.Democratic Senator Ron Wyden attempted three times to block changes to Rule 41 that potentially risks people using Tor, a VPN, or some other anonymizing software to hide their whereabouts, but the efforts were blocked by Republican Senator John Cornyn of Texas.The rule change should take effect on 1st December, today, barring surprises.On the one hand, privacy advocates and legal experts have described the rule change as the extensive expansion of extraterritorial surveillance power that will allow agencies like the FBI to carry out international hacking operations with a lot less of a hassle.On the other hand, the DOJ argued that the changes to the rule will help investigate modern internet criminals, allowing investigators access computers whose locations arelike the Tor anonymity network or VPNs (Virtual Private Networks), and devices used in botnets that have become powerful cyber weapons Assistant Attorney General Leslie Caldwell highlighted these concerns in a blog post published last week, saying if a criminal suspect is using Tor or VPN to hide its real location, it becomes tough for investigators to know his/her current location.But what would happen if the FBI hacks the botnet victims, rather than the perpetrators? Or what if the government abuses this power to target nation states?In a speech, Wyden said that the changes to Rule 41 amounted togiving federal investigatorsReuters reports Other critics worry that the changes to Rule 41 would give the FBI unfettered ability to hack innocent users whose electronic devices have been infected with botnet malware without their knowledge, or anyone who keeps their identities private online.To this concern, Caldwell argued that investigators accessing the devices of botnet victimsor in order toCaldwell further argued that the rule change would not allow the FBI to conduct ";" in fact, failing to implement the rule change