"I could see people trying to target those systems. Anything that's mass market is going to be an open target for people," he told ZDNet Australia.
According to Brace, the very nature of standardisation is what could cause problems.
"Tools like Flash and other areas where you've got commonality between them could potentially expose devices to other attacks," he said.
Although mobile devices have been developed with some level of security in mind, Brace says it doesn't rule out the possibility of problems in the future.
"We have got some key things built into the OS, Symbian's a pretty secure OS anyway," he said. "A lot of vendors [are] working in the security space... because they see it as an opportunity. Right now there aren't many attacks but who's to say tomorrow there won't be".
As for securing the devices made by the company, Brace believes it's up to third party security vendors and anti-virus companies to server the consumer market, whilst pointing out that Nokia is serious about protecting broader mobile infrastructure.
"As far as getting down to the individual mobile devices, that's just like providing tools for laptops and other areas among standardised OS devices," he said. "The goal of security in the GPRS and 3G network is to protect that infrastructure, it's not to protect the devices on [it]".
Developing security applications for Symbian itself is up to third party developers, Brace added.
The company has developed a message gateway filtering device for enterprise customers that filters SMTP--or e-mail protocol--devices, but plans are in place to expand its capabilities to filter protocols related to mobile devices as well.
