Malware mash-ups hiding in encrypted traffic are boosting attack numbers and increasing the danger to data, according to recent reports. Those attacks included old favorites along with more than 12,500 new CVEs (Common Vulnerabilities and Exposures), of which 78% were network-borne attacks, SonicWall said in its latest threat report. Another growing trend shown in the report is that of encrypted malware, or malware hidden in the encrypted stream of information flowing in and around a business. Criminal use of encryption has led some to call for limits on encryption strength, or built-in backdoors in encryption schemes. One security expert who doesn't feel that there should be limits on encryption is former Secretary of Homeland Security Michael Chertoff. "As a general matter I would not limit the encryption that people can use," he says, explaining that the only legitimate limits he sees to encryption are the capabilities of the hardware on which the system is running.