<i>&quot;Home and mobile working, including use of personal devices for work: ensure that sensitive data is encrypted when stored or transmitted online so that data can only be accessed by authorised users.&quot;</i><p>Quote from UK government advice to small business people, see<p><a href="https:&#x2F;&#x2F;www.gov.uk&#x2F;government&#x2F;uploads&#x2F;system&#x2F;uploads&#x2F;attachment_data&#x2F;file&#x2F;412017&#x2F;BIS-15-147-small-businesses-cyber-guide-March-2015.pdf" rel="nofollow">https:&#x2F;&#x2F;www.gov.uk&#x2F;government&#x2F;uploads&#x2F;system&#x2F;uploads&#x2F;attachm...</a><p>I suspect that GCHQ people want people using encryption but encryption that they have a feasible way of breaking if needed. Yes, I know, no way of stopping back-doors being used by other agencies&#x2F;bad actors.