Legacy vulnerabilities may be biggest enterprise cyber risk While high-profile cyber attacks and zero-days grab headlines, statistics gathered by network security specialists Cato suggest CISOs should be addressing legacy threats Share this item with your network: By Published: 25 May 2021 8:00 Cyber attacks exploiting vulnerabilities in unpatched legacy systems, via consumer applications such as TikTok, and originating from friendly countries may be a bigger risk to the average organisation than attacks through novel zero-days conducted by Chinese or Russian APT groups, according to a report produced by secure access service edge (SASE) specialist Cato Networks. In compiling the SASE Threat research report, the Tel Aviv-based network security firm said it found strong evidence that mainstream preconceptions of enterprise security and network usage are frequently highly inaccurate.