In Cecil’s column on the Rosenburgs, he mentions the “Ales”/Alger Hiss connection. While, as Cecil points out, the weight of evidence points to Hiss being a spy, the “Venona” connection identifying him as Ales is really a red herring.
[This page makes the argument that Hiss was innocent, partly by taking apart the “Venona Connection.”
Now, the author admits that he was a firend of Hiss’, and that he’s an NYU professor, which suggest he may be biased, but his arguments are referring directly to the relevant [URL=http://www.nsa.gov/venona/venon00006.cfm]Venona papers](http://homepages.nyu.edu/~th15/lowsoviet.html), compared to Chambers’ testimony. The rest of the argument involves assassinating the character of Whitaker Chambers (He was a homosexual and received treatment for mental illness at one point, apparently.), but I think he pretty effectively demolishes the case that Ales was Hiss.