Današnja pitanja i odgovori nam se javljaju zahvaljujući SuperUseru - podjele Stack Exchange-a, zajedničkom pogonu Q & A web stranica.
Pitanje
Knjiga SuperUser čitača Kyle Cronin želi znati jesu li takve tehnike e-pošte za opsade vrijedne gnjavaže:
Most of the time when I see someone post their email address online, especially if it’s a personal address, they use something like
me [at] example [dot] com
instead of the actual email address ([email protected]). Even top members of this community use similar styles in their profiles:
jt.superuser[AT]gmail[DOT]com
quixote dot su over yonder near that gmail place
The typical rationale is that this kind of obfuscation prevents the email address from being automatically recognized and harvested by spammers. In an age where spammers can beat all but the most diabolical captchas, is this really true? And given how effective modern spam filters are, does it really matter if your email address is harvested?
S obzirom da je to gnjavaža za stvarne ljude s kojima pokušavate komunicirati (a možda i nije gnjavaža za žetelice koje pokušavate izbjeći), vrijedi dublje kopanje kako bi saznali jesu li tehnike stvarno učinkovite.
Odgovor
SuperUser suradnik Akira nudi studiju o tome kako bi podržao upotrebu zamke:
Some time ago I stumbled upon the post of someone who created a honeypot and waited for differently obsfucated email-addresses coming back:
Nine ways to obfuscate e-mail addresses compare
CSS Codedirection 0 MB
moc.elpmaxe@zyx
CSS prikaz: nema 0 MB
xyz
@example.com
Šifriranje ROT13 0 MB
[email protected]
Upotreba AT i DOT-ova 0,084 MB
xyz AT example DOT com
Izgradnja s Javascriptom 0,144 MB
var m = 'xyz'; // you can use any clever method of m += '@';
// creating the string containing the email m += 'example.com';
// and then add it to the DOM (eg, via $('.email).append(m); // jquery)
Zamijenite '@' i '.' S entitetima 1.6 MB
[email protected]
Raspodjela e-pošte s komentarima 7.1 MB
xyz@primjercom ?> var13 ->
Urlencode 7,9 MB
xyz%40example.com
Običan tekst 21 MB
[email protected]
Ovo je izvorni statistički grafikon kojeg je napravio Silvan Mühlemann, sve što mu pripada pripada:
Doprinositelj ak86 teži, primjećujući da sve što dobivate kroz skrivanje oštećenja ćete izgubiti zbog neugodnosti za sebe i vaš kolega e-mail:
There was an interesting article by Cory Doctorow recently on this subject here which argued that email obfuscation doesn’t serve much purpose, and a more optimal approach is intelligently managing the spam you get. TL;DR version:
- The objective of this entire exercise is not to reduce the amount of spam you get in your email, but the amount of spam you manually have to remove from your inbox.
- Email obfuscation is a constant battle to come up with ever sophisticated bot-proof, human-readable encoding, and is a drain on the productivity of both the creator, and the correspondent.
- “Almost any email address that you use for any length of time eventually becomes widely enough known that you should assume all the spammers have it.”
- “The convenience of stable, easily copy-pastable email addresses” wins over trying to hide from the spambots.
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