Investigation launched at Travelport today after learning the Twitter account belonging its Opinions review and online network had been Tweeting about dieting.
The first of the rogue messages appeared on the @TPOpinions Twitter feed on 26 July, pointing followers to a diet "that really works!".
Two further messages appeared over the course of the next three days, once again with links to a site clearly not related to the workings of professional travel reviews or industry topics.
It seemed highly unlikely that those running the Travelport Opinions feed were concerned enough about the waistlines of followers to use Twitter to help them with dieting programmes, so something was obviously amiss.
It is unclear at this stage as to why the security breach had not been flagged up earlier by either Travelport or its Opinions partner Vinivi.
Travelport and Vinivi are now trying to establish whether the account had been hacked or if a buggy third-party application (many services plug in to Twitter to access information and are known to cause problems) had compromised the service.
An official says:
"We are working with our partner Vinivi to investigate this possible hack, and, as a safety measure have changed our password to ensure any potential hacking is stopped."
To its credit, Travelport has not tried to hide the problem, deleting the trio of fat-busting tips quickly after being notified of their presence today but then quickly posting a message for followers: