Today Nils Toedtmann published a grave security issue. In Firefox, Konqueror and Opera an attacker could fake SSL secured sites.Thus, its possible that your browser shows a faked site https://mybank.com without a certificate warning.
The good news for Mac users is, that in Leopard and the latest updates to Tiger ( I just checked this), this problem is resolved. However, with my old notebook (not updated, safari 2.0.0.9) this kind of attackers is possible.
Use this site to check if your Bother is vulnerable.
