If you need to blow the whistle then it would be best to go to those who are accustomed and equipped to deal with it securely and safely.
We support the principle of whistleblowing. Many an injustice and corrupt activity in high places has been exposed by people who had the courage and the means to blow the whistle at a handful of websites.
We are regular visitors to
Beware that some well known sites and forums are honeypots. Likewise some anonymizer services are in cahoots with authorities.
http://stopline.com.au/ - provider of whistleblowing programs and related hotline, investigative and forensic technology services, STOPline offers a simple, cost effective and highly confidential solution to the difficult issues of ethics, compliance, risk management and corporate governance.
See also anti-corruption