Online assets continuous monitoring and protection

A protection system for detecting an inclusion of one or more of subscribers' legitimate domain addresses within publicly published blacklists on the web, the system comprising:

• A) a subscribers' list including, for each subscriber, one or more of the subscriber's owned legitimate I.P. addresses, URLs or Domains;
• B) a list of URLs of sites' that publicly publish blacklists, each said blacklist includes I.P. addresses, URLs or Domains of malicious sites;
• C) a monitoring module that, for each subscriber, is configured to:
• (i) access a site from said list that publicly publishes a blacklist of malicious domains;
• (ii) scan the blacklist published by said site to determine whether one or more of the subscriber's legitimate I.P. addresses, URLs or Domains appears within the blacklist;
• and (iii) alert the subscriber upon determination that one or more of his owned legitimate I.P. addresses, URLs or Domains appears within the scanned blacklist;
• and, repeat (i)-(iii) for additional sites from said list of sites' that publicly publish blacklists.