Which versions of PGP does SpyShield support?
SpyShield 1.0 supports PGP 6.5.8. SpyShield works with PGP 6.5.1; however, signing imported keys is known to fail due to a PGP bug. Compatibility with earlier versions has not been tested; if you have used SpyShield successfully with an earlier version, please inform us by email to spyshield@commandcode.com.