Nicola Sturgeon urged Scots not to be tricked by a new vaccine appointment scam.
The First Minister said members of the public are being targeted in a growing attempt by criminals to latch onto public fears in the pandemic.
The SNP leader, at her daily covid briefing, said: "I'm afraid we are becoming aware about some scam emails and messages which are being sent out about vaccine appointments."
She advised the public to remember the vaccine is free and NHS Scotland would never ask for payment for a dose.
"In addition, NHS Scotland is not using email to contact people, so if you receive an email about your vaccination appointment it will be a fake so please do not interact with it," she added.
The warning comes as Scotland's vaccine programme continues to pick up pace.
Sturgeon said the latest daily total was "whopping" - but she warned there might be a dip in available doses across the UK in the weeks ahead.
Official figures show 928,122 people were given a first dose of a coronavirus vaccine by 8.30am today, up 61,299 from Monday.
But in a move to manage expectations, she said: "We expect, over the second part of February, our supplies coming into Scotland to slightly dip for a period and that will be a UK-wide issue.
"We'll have to think about the balance of doses that we have available that go to second doses versus the additional people we want to give first doses to."
The First Minister said she remained determined to ensure those over the age of 50 and anyone with an underlying health condition will receive their first dose by the start of May.
Sturgeon also said vaccinations were going ahead despite severe snow across Scotland, although the number of people seen in Scotland may fall due an increase in cancellations.
Scotland has recorded 58 deaths of coronavirus patients and 822 new cases in the past 24 hours.
The death toll under this measure – of people who first tested positive for the virus within the previous 28 days – is now 6,501.
The daily test positivity rate is 7.2%, up from 6.6% on Monday when 928 new cases were recorded.
There are 1,618 people in hospital confirmed to have Covid-19, down 54 in 24 hours. Of those, 112 were in intensive care, a rise of four.
