发现PuTTY昨天更新了beta 0.64版,修复了一个用户私钥可能留存于内存的bug。ChangeLog提到:
Security fix: PuTTY no longer retains the private half of users' keys in memory by mistake after authenticating with them. See private-key-not-wiped-2. (Sorry! We thought we'd fixed that in 0.63, but missed one.)
看了一眼以前的Log,上一个版本是一年半前更新的,beta 0.50版是2000年发布的。
http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html