simple security rules appear to be beyond the depth of comprehension achieved by a sizable percentage of respondents to a survey conducted recently in London. Surveyors contacted random office workers outside the Liverpool Street Station and offered them a piece of chocolate for their office password — and 21% gave it to them. That’s down from last year’s 64%, but still — 21% means that in an office of only 26 people, 5 of them would give out their password for chocolate.