Email Prankster has posted what appears to be screenshots of emails sent to the shadow home secretary’s private email address in which he is posing as Jeremy Corbyn’s spin doctor, Seamus Milne.
He said the emails prove anybody could hack her account, which he said is a concern for someone who could be looking after the country’s counter-terror plans.
In May, the email prankster claimed to have caught out the governor of the Bank of England, Mark Carney, who agreed the drawing of Jane Austen on the new £10 note had a face which resembles “that of someone who’s had a ‘bracing martini’.
The Bank confirmed the emails were real.
Diane Abbott allegedly sent emails asking how to deal with her health in the public eye
In yesterday's exchange, the prankster – who uses the twitter handle @sinon-reborn – tells Ms Abbott he has spoken to Mr Corbyn and the pair think she should “add some colour” to the alleged illness which prevented her from appearing on Woman’s Hour yesterday morning.
Half an hour before the 9am live Radio 4 debate between female politicians from five parties, including Amber Rudd, the BBC programme was told Ms Abbott had been “taken ill” and was then replaced by shadow foreign secretary Emily Thornberry.
On Monday night, Mr Corbyn's close ally floundered during a Sky News interview with Dermot Murnaghan when she could not answer any questions about a key counter-terrorism report.
In the unverified e-mails, the prankster added: “Flesh it out with some more detail if you will, perhaps also mention some medication which might be retrospectively seen as a mitigating reason for the Murnaghan interview.
“It’s articles such as the below we wish to deflate if we can.”
Email Prankster claimed this was from Ms Abbott
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Ms Abbott had an awkward interview where she could not name counter-terror measures
Following were two links to stories about Monday night’s shambles and yesterday morning’s no-show.
Email Prankster claimed to show Ms Abbott’s reply, which read: “Do you still want to add colour to the illness story? If so maybe we should speak.”
Then in a separate email, she appears to write: “I am not sure what colour I can add. I have always enjoyed good health until the last few years. And, diabetes in itself would not stop me doing Woman’s Hour.
“I am worried about telling untruths which are easily disproved.”
Diane Abbott's most controversial quotes Fri, April 7, 2017
Outspoken Shadow Home Secretary, Diane Abbott holds strong opinions which does not always go down well.
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Abortion is an issue of conscience for the Labour party.
She also seemed to be worried about being cut out of the election night coverage, with the prankster alleging she said: “What is the situation about election night press?”
Later, Ms Abbott also pulled out of an Evening Standard hustings debate.
Moments after the initial illness emails, she appears to email Mr Milne saying: “Someone has to ring and pull me from the Evening Standard hustings.
“Bell can’t do it because she is on a train.
“And, meanwhile I have at least four journalists/photographers doorstepping me.”
Another email claimed to be Ms Abbott saying she could not attend a hustings
However the Labour party has branded the emails fake.
A Labour spokesman said: “We are not commenting on fake email exchanges.
“Diane is unwell.”
Email Prankster tweeted: “Is @HackneyAbbott really ill today? You decide. I chatted with her earlier today.
“GENUINE exchange. I was being Corbyn’s media advisor.”
He added: “I’ve nothing against Diane. I just think if you’re potentially keeping Britain out of harm’s way, then you have your cyber-s*** locked down.
“In all seriousness, if I was a North Korean or Russian hacker I could have sent her God knows what to download.
“No personal emails for MPs.”