There's Linux/Unix based AV products. There's other ways to attack a system than getting through open ports. lolit
It's not only about the OS... sure there are viruses/threads for Linux BUT: hey I'm a nasty virus build for x86... what the heck am I doing with this strange little ARM CPU???
Contacting ClamAV community might be your best bet, if you are really worried about viruses on Maemo. http://www.clamav.net/
(AFIK) ClamAV is the only open source anti-virus software for *NIX based systems. I very seriously doubt that any of the commercial vendors would be interested about making Maemo port, or that any developers here would be interested about wasting their time and effort for something as trivial as this.
If the 'free software on Ovi' plan ever comes off it might be worth someone's while to pop a build of ClamAV up for a few pounds. It could add a little spinning green shield to the notification area and pop up pointless alerts every few hours to tell you that everything's still OK. Sounds like there's a demand for it.
There's Linux/Unix based AV products. There's other ways to attack a system than getting through open ports. lolit
Those are for Linux servers, meant to protect the tender asses of Windows machines that connect to them. As has been said, there are no Linux viruses you need to worry about. In 9 years of Linux I've never used or needed AV protection.
There are several ways of attacking any OS. And Linux/Unix is not immune to everything. But Linux is is far, far more secure by nature than Windoze or even OS-X. Anti-Virus for Maemo would be pointless, a waste of CPU cycles and your money.
IOW, just don't worry about it. It's not Windoze...
Contacting ClamAV community might be your best bet, if you are really worried about viruses on Maemo. http://www.clamav.net/
(AFIK) ClamAV is the only open source anti-virus software for *NIX based systems. I very seriously doubt that any of the commercial vendors would be interested about making Maemo port, or that any developers here would be interested about wasting their time and effort for something as trivial as this.
Well it's mostly to clear the mind of newcomers, who have doubts about virus', who don't know what Linux is all about. Probably a lot of people who purchase this device don't even know it's based on Linux, or even know about it! So yeah, I know what you mean...
I'm pretty sure there's a thread floating around about making NITs waterproof, one way is putting on the device a non-lubed clear condom and tie a knot on its open end: heck, if it keeps water out, I guess that should work for virus too!
(Warning: the above suggestion may contain sarcastic material non suitable for minors or laking-in-sense-of-humor folks, readers' discretions is advised)