The Conservatives have said that they are the only party who will "crack down" on terrorism and stop legislation being "misused" against ordinary people.
Shadow security minister Baroness Pauline Neville-Jones said that under Labour, Britain had "looked the other way".
She told the Tory conference in Birmingham: "We need the right anti-terrorism laws. Labour has passed so many that prosecutors don't seem to know which ones to use.
"A lot of them are so loosely drafted that they're abused.
"We will clean up the anti-terrorist legislation so that its complexity doesn't let the terrorists off - and to stop it being used and misused against ordinary people, you and me."
Lady Neville-Jones said the Tories would "crack down" on those who finance terrorism and radicalise individuals.
She said: "Did you know that it is legal to recruit and raise funds in this country for that well-known terrorist organisation Hezbollah? Well we will end this."
She also pledged to ban the radical Islamic group Hizb ut-Tahrir from Britain.
The Tories would introduce a "unified border police" - because border security should not have gaps, she said.
Ministers would also look at the way the European Convention on Human Rights was interpreted so that there were no barriers to anti-terror laws.
David Cameron had spoken with German chancellor Angela Merkel to discuss the convention, Lady Neville-Jones said.
She told the conference: "We have agreed that we will work together to plan ways that remove obstacles posed by the current interpretation of this convention."
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