Cybersecurity researchers have uncovered a new, highly stealthy Windows malware strain dubbed PDFSider that was used in a targeted attempt against a Fortune 100 financial firm. Unlike commodity ransomware that loudly encrypts files, PDFSider behaves more like an advanced persistent threat (APT) by: Because it blends in with legitimate activity and uses encrypted backdoors, PDFSiderContinue reading “PDFSider Malware Attack: What Texas Businesses Can Learn From a Fortune 100 Breach”