從putty官方網站上看到的消息

2005-02-20 SECURITY HOLE, fixed in PuTTY 0.57

PuTTY 0.57, released today, fixes two security holes which can allow a malicious SFTP server to execute code of its choice on a PSCP or PSFTP client connecting to it. We recommend everybody upgrade to 0.57 as soon as possible.