The Electoral Commission demanded an urgent review by the electoral registration and returning officers to find ways by May to improve fraud detection and systems for dealing with allegations.

BBC: No prosecutions over Tower Hamlets vote fraud claims

For several years, criminal authorities have wrestled with challenges caused by communication about illicit activities, from securities fraud to drug dealing to terrorism, through messaging tools in social networks, videogame systems and other digital platforms.

WSJ: Wall Street Battles States on Social-Media Protections

As for scandal, the Republican leader in the Senate, Bill Frist, is under investigation for insider dealing and the House leader, Tom DeLay, has been indicted on charges to do with campaign fraud.

ECONOMIST: George Bush

Papastavrou clashed with Guerra, bringing a lawsuit in 2009 that claimed Guerra had engaged in self-dealing and fraud.

FORBES: SEC Charges Formerly $1 Billion Hedge Fund With Misleading Investors