APT41, a Chinese hacking group known for its prolific state-sponsored espionage campaigns, has begun targeting telecommunications companies with new malware. The malware is being used to extract SMS message content, mobile subscriber identity numbers, and the source and destination phone numbers of targeted individuals. FireEye’s disclosure on MESSAGETAP is the second development this week involving individuals being targeted via malware placed on service provider networks. The new campaign is a threat to both individuals and businesses of interest to the Chinese government, FireEye Mandiant says.”]