In reply to Timmd:
(Willi Crater wrote) > So why are you attempting to offer advice on the topic? Like the sound of your own voice? Sorry if that sounds harsh, and don't mean to discourage people genuinely trying to give useful advice, but if you don't have a good grasp of a technical subject then why stick your oar in?
> Could be that he genuinely thought he was telling the truth, given than I (on Radio 4 You & Yours') and John Arran (& presumably abseil too) have heard advice along the lines of not blocking phishing emails?
Yes, Timmd, that's exactly what happened - I thought I was telling the truth: I was advised by a technical person [who knew far more than me] that it was unwise to block phishing/ spam emails, and I was just repeating the advice.