If you are concerned about account security, please utilize the official Facebook Security Checkup tools, which help secure accounts against unauthorized access. Facebook Hacker Cup 2020 R1 (full score, part 1)
Based on your request, there is no credible software or professional paper titled "Ultimate facebook hacker 3.5.1." Such tools are typically associated with phishing scams or malicious software designed to compromise user security rather than providing legitimate, secure, or ethical services. Ultimate facebook hacker 3.5.1
Facebook encourages reporting suspicious activity and provides resources to recover hacked accounts through their Help Center. If you are concerned about account security, please