Tutorial How to stay anonymous when hacking and surfing around. Part 2

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If you downloaded and installed the open-source Unreal IRC server in the last 8 months or so, you’ve been pwned.



"Hi all,



This is very embarrassing…



We found out that the Unreal3.2.8.1.tar.gz file on our mirrors has been replaced quite a while ago with a version with a backdoor (trojan) in it.



This backdoor allows a person to execute ANY command with the privileges of the user running the ircd. The backdoor can be executed regardless of any user restrictions (so even if you have passworded server or hub that doesn’t allow any users in)."

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"if your encryption program uses 128-bit keys, your particular key could be any of more than 3.4 trillion billion billion billion possible combinations. More likely to win the lottery than to crack that level of encryption using the brute-force method"[b]Or just use RSA 4096-bit and 256-bit AES?[/b]

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Individuals who are believed to have the cryptographic keys necessary for such decryption will face up to 5 years in prison for failing to comply with police or military orders to hand over either the cryptographic keys, or the data in a decrypted form.

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The design and strength of all key lengths of the AES algorithm (i.e., 128, 192 and 256) are sufficient to protect classified information up to the SECRET level. TOP SECRET information will require use of either the 192 or 256 key lengths.

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TrueCrypt allows you to create a hidden operating system whose existence will be impossible to prove (provided that certain guidelines are followed — see below). Thus, you will not have to decrypt or reveal the password for the hidden operating system.

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SOCKS



Bill wishes to communicate with Jane over the internet, but a firewall exists on his network between them and Bill is not authorized to communicate through it himself. Therefore, he connects to the SOCKS proxy on his network and sends to it information about the connection he wishes to make to Jane. The SOCKS proxy opens a connection through the firewall and facilitates the communication between Bill and Jane. For more information on the technical specifics of the SOCKS protocol, see the sections below.

HTTP



Bill wishes to download a web page from Jane, who runs a web server. Bill cannot directly connect to Jane's server, as a firewall has been put in place on his network. In order to communicate with the server, Bill connects to his network's HTTP proxy. His internet browser communicates with the proxy in exactly the same way it would the target server—it sends a standard HTTP request header. The HTTP proxy reads the request and looks for the Host header. It then connects to the server specified in the header and transmits any data the server replies with back to Bill.

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HTTP proxies are traditionally more HTTP protocol aware and do more high level filtering (even though that usually only applies to GET and POST methods, not CONNECT). SOCKS proxies can also forward UDP traffic and work in reverse - HTTP proxies can't do that.

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"Secure VPNs use cryptographic tunneling protocols to provide confidentiality by blocking intercepts  and packet sniffing, allow sender authentication to block identity spoofing, and provide message integrity by preventing message alteration."