The increase in mobile working practices among local authorities is fuelling fears that confidential data could land in the hands of opportunistic hackers.
IT security specialist Sophos has found that 71 per cent of people believe their local authorities should prevent staff from accessing confidential data about citizens - via laptops, blackberries, or other mobile devices - when they are working away from the office.
The results come in light of a number of local authority blunders involving the loss of confidential data.
In 2007, Newcastle City Council admitted to losing the payment card details of 54,000 local residents - information which was held on an unsecured server, and accessed by a computer outside of the UK.
A number of government bodies, including the Ministry of Defence and the HMRC, have also disclosed data breaches - stolen laptops or misplaced CDs.
Sophos says the public is now voicing its concerns.
It points out that despite the need for more flexible working environments, organisations must properly secure portable devices just as they would their internal networks.
Hard drives containing work-related information need to be fully encrypted, and nonwork related applications such as VoIP and IM, which could be exploited by hackers, should be blocked.
But while a Whitehall-wide ban was imposed last week to halt the movement of unencrypted data to and from central government departments, no such regulations have been introduced at local government level.
"It's clear from our research that the British public has little faith in their local authorities' ability to secure confidential information," said Carole Theriault, senior security consultant at Sophos.
"If organisations need to give employees access to work files, a tight security strategy must become a crucial part of the public sector's IT infrastructure.
"Government bodies need to better educate their staff on safe computing practices, and subsequently reinforce this message to its constituents."
Sophos says that a network access control solution can enforce the correct level of access to data held on the network, dependent on business role.
Visitors or contractors are kept behind an 'invisible' boundary - and any user without the required level of security on their machine can be blocked from the network, safeguarding the public's personal information.
"Just as physical security is managed by assigning appropriate levels of security clearance before someone is admitted into a building, the same principle needs to be applied to the network," said Carole Theriault. "As wireless internet access becomes the norm in many working environments, organ-isations need to consider locking down user access - the public perception is that constituents' data is open to anyone to delve into.
"Implementing security measures is no longer enough, the Government needs to reassure the public that their data is safe."
The survey also revealed that 78 per cent of people are concerned that visitors to local authority buildings, whether they be members of the public or contractors, are able to use wireless networks and gain unauthorised access to confidential data.