Engineer preventing cybersecurity issues

african american engineer preventing supercomputer cybersecurity issues unsecured network specialist data center invulnerable phishing attacks electronics server high tech technology database maintenance technician admin equipment backup firewall denial of service attack ddos cybercriminal security malicious traffic audit rootkit secure intrusion detection threats unauthorized access vulnerabilities safe hacker privacy safety encryption protect access virus cloud software private hacking antivirus defense malware ransomware cyber attack spyware protection safeguard