Porn filter on e-mail easily tricked

Content Technologies, a subsidiary of Ireland-based online security consultant Baltimore Technologies, on Friday acknowledged that there are ways around its PORNsweeper.

"If the image is messed with, PORNsweeper won't catch it," said Jonathan Tait, European product marketing manager for Content Technologies.

"PORNsweeper works with colour images. If you use image editing software to turn an image into a negative that will trick the software," Tait said.

PORNsweeper, which was launched in September, is server-based software that analyses images as they enter an e-mail system. System managers can set filtration rules to reflect company policy. PORNsweeper is an add-on module for Content Technologies' MAILsweeper.

The analysis includes scanning images for the colour of human skin in the pixels and screening these pixels to determine various statistics about the image, Tait said. Nude or pornographic images often contain more skin pixels than other images.

The software is sold as the ideal tool to protect organisations from "exposure to legal liability, damage to corporate identity, hostile working environments, abuse of resources and loss of productivity," according the company's promotion literature.

Recent events have shown that this is an issue for employers. Several companies, including mobile phone operator Orange and Dow Chemical, have fired staff for downloading lewd images and sharing those with colleagues.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Joris Evers

PC World
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?