As one lawyer warned, the Flintshire Council may face legal penalties due to a data breach which resulted in the publication of data of dozens of citizens.
The draft identifies sites where up to 7.000 new homes could be built in the county over the next decade and has attracted criticism from hundreds of people who are worried about possible pressure on local services.
When the comments were posted on the authority's website, it was soon discovered that personal information some of them, including their names and contact details, could also have been leaked.
They have since claimed that they have been harassed on social media.
The Flintshire Council apologized to the 66 people affected and referred the incident to the Office of the Information Commissioner.
While the authority said the intelligence officer had chosen not to pursue the matter, Mr Godfrey said he believed anyone affected by this "serious breach" could claim a valid claim for compensation.
According to attorney Simpson Millar: "We had residents who contacted us who are rightly concerned."
"We are actively working on possible claims on behalf of people who are directly affected by this serious matter infringement. "
"This is a clear violation of the rules GDPR and data protection. The council also acknowledged that it had used bad security practices to protect confidential information. "
"I'm sure any person whose information has been tampered with can have a valid claim."
He added: "The information of some of the victims was published in Internet and therefore unjustly harassed. "
It even encourages affected residents to seek urgent legal advice. The Flintshire Council acknowledged that the personal details of some of the people involved in the Local Development Plan were exposed in a document on its website for three hours.