The list of organizations willing and/or capable of attacking such a network is limited.

1) Stalkers who know their target in real life.

2) Stalkers who only know their target on the metanet.

3) Local law enforcement. Examples: County sherrifs, LAPD, NYPD

4) Regional law enforcement. Examples: New York State Police

5) National law enforcement. Examples: FBI, RCMP

6) Corporate entities. Examples: Sony's legal dept., MPAA, BSA

7) Spook agencies. Examples: CIA, NSA, Mossad, MI6, DGSE

Level 1 attackers should have little or no knowledge that someone is present on metanet. Not to mention they have more opportunity for nastiness in real life. Level 2 attackers, assuming that anonymity is preserved, shouldn't pose a problem either. Supposing that a level 2 attacker has some fantastic resource at his disposal, the attacker then most likely belongs in one of the higher categories.

Attackers which belong in categories 3, 4 and 5 are moderately worrisome. Even in the most liberal democratic nations, law enforcement authorities are never shy to poking their nose into things that shouldn't be their business. Generally, as law enforcement progresses from local to regional to national, budgets and technical sophistication grow.

Level 6 attackers are possibly the most dangerous adversaries. They have or can hire experts with formidable technical skills, they have virtually unlimited financial and legal resources, and more often than not, arrogant attitudes about what constitutes infringement.

Level 7 attackers are difficult to write about without speculating wildly on their goals, resources or technical abilities. There are two schools of thought on this subject, the first ascribes to them nearly supernatural espionage talents which they use to great effect in their never ending schemes of global domination, the second would describe them as moderately competent bureacrats tasked with providing intelligence data on their enemies. How they would affect a metanet is largely dependent on which description is accurate, or to what degree both are so.