All Spammed Up: Soft hyphens used to evade spam filters
“The problem stems from how browsers like Firefox treat text containing soft hyphens. The hyphens are represented by something called the SHY character. It gets its name from its representation in HTML–­. Although industry standards dictate that soft hyphens should be treated as visible characters used in a specific context, it’s often treated as a hidden hyphenation hint. What that means is some browsers see that as a license to ignore it entirely.”
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