The pure AOSP ROMs previousy promoted on this page were intended for developers only, with Several Android security features DISABLED. This was so that developers could easily investigate the bugs in the ROM. If you have one of those ROMs installed you should immediately flash a SONY stock ROM.
Those ROMs provide NO protection against malicious apps or websites you may visit.
Furthermore there are several missing features and even serious bugs that have probably already damaged your device permanently.
All links to insecure ROMs have been removed from this page.