The government has confirmed plans to ban pensions cold-calling, including emails and text messages, but no date has yet been set for implementation.
The ban, enforced by the Information Commissioner's Office (ICO), represents a tightening of HMRC rules to stop scammers opening fraudulent pension schemes.
It also imposes tougher actions to help prevent the transfer of money from occupational pension schemes into fraudulent ones.
The government is also aiming to ensure that only active companies producing regular up-to-date accounts can register pension schemes.
The announcement comes as new figures show almost £5 million was obtained by pension scammers in the first five months of 2017. It is estimated that £43 million has also been unlawfully obtained by scammers since April 2014.
Minister for pensions and financial inclusion Guy Opperman said: 'Today’s figures highlight the extent to which people’s savings are being targeted and stolen through elaborate hoaxes - leaving them with little opportunity to build up their savings again.
'If people have saved for a private pension, we want to protect them. By tackling these scammers, people should know that cold calling, apart from exceptional circumstances, is banned.'
Tom Selby, senior analyst at AJ Bell, said the measures would put a 'severe dent in the business models used by these fraudsters'.
He added: 'However, it is concerning there remains no set date for implementation and we urge policymakers to fast-track these vital protections through Parliament as a matter of urgency.
'It’s also important to note that this will not stop cold-calling or pension scams. Fraudsters will seek to exploit any loopholes in the rules, and many of the outfits involved will simply move their call centres abroad to avoid the ban.
'But the message this intervention sends to savers is hugely valuable and should go some way to reducing the number of people who get conned out of their life savings.'
The move comes after a long delay following a petition from Derbyshire IFA Darren Cooke, launched in October 2016.
The government has come under fire from the profession after repeated delays in the introduction of legislation.
Hargreaves Lansdown senior pension analyst Nathan Long said: 'Clamping down on calls, texts and e-mails won’t stop the scammers, but it sends a loud and clear message to be on your guard if you are contacted out of the blue. The golden rule with pension planning is if something appears too good to be true, it almost certainly is.
'Making pension schemes harder to set up and ensuring transfers only proceed to appropriately regulated schemes will all help to blunt the damage that scammers can inflict moving forward, but pension savers must remain vigilant.'