Whilst just in the UK we were chatting with an independent tax advisor who warned us not to fill out any e mail enquiry from H.M. Revenue as the bogus enquiries have had even the proffesionals fooled.Also, said we were wise not to fill out French tax on line showing the bank details!!
Also a deliberate ploy by the UK Government at the moment (as they are desperate for funds and to show good predictions for funds!) is a revision on your tax number rating, be aware they are revising many rating and deliberately putting them higher eg: Friends rating number was 72 , they had notice to up the number to approx 2000 , knowing full well at a review (that could take 2 years ) it would be reduced back, their accountants were so furious as it was the 10th clients re assessment in one week the they were going to report this to the BBC!!! and ask for a public investigation, guess what, big apology came back and all the 10 people had their rating reduced back to where it was before. The UK government "it is alleged" is so desperate to show good projected figures they are trying anything!
The bogus HMRC e-mail scam is just the standard 'phishing' technique of getting you to your disclose your security codes/PIN numbers so they can access your accounts/cards. No official/bank website will ever ask you for this information, so you should follow routine precautions.
As for suggesting it's wise not to fill out French tax on-line showing your bank detailes, does he imagine your bank account number is secret?
Awwww shucks SD its a "she" that is Oh so wise!!. Filling in forms or filling out forms , "today" everyone seems to want to know everything,I think its quite scary.