SIP-Benchmark III was a project of the Digital Opportunities Foundation in 2009 - 2017.
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K9 Web Protection Browser (Mobile)

Blue Coat Systems
Devices supported
Operating system
Price *
free of charge
Language of interface
Test date
SIP Bench III, 2nd test cycle, Winter 13/14

*Prices might change according to the latest company offers


The overall effectiveness score is fair on adult content and very weak on other harmful content.
There is no major difference in effectiveness between teenagers and children.
There is no major difference in effectiveness between web and web 2.0.
There is no major difference in effectiveness among the different languages.
Effectiveness score with adult content filtering for users up to 12 year old: 2.2
Effectiveness score with other harmful content filtering for users up to 12 year old: 0.0
Effectiveness score with adult content filtering for users 13 years and older: 2.4
Effectiveness score with other harmful content filtering for users 13 years and older: 0.0
Effectiveness score for users up to 12 year old: 1.1 out of 4 points
Effectiveness score for users 13 years and older: 1.2 out of 4 points


Installation of the tool: K9 for Mobile is delivered as an application which is installed nearly automatically. Therefore, the installation process was not tested with regards to usability.
Configuration of the tool: The configuration is limited to an application-based process; configuration steps via web-based access are not provided. The process is mostly comprehensible but context sensitive information are insufficient and could be more detailed. Therefore, the process is partly difficult to understand. The few options to influence the tool are very basic. Filter options are not provided. The configuration is consistent and it is mostly conform to users' expectations.
Usage of the tool: The tool provides barely options to react when a web site has been blocked. The alert message is quite adequate taking into account the small device but it is not worded appropriately to children's level of understanding. There is a kind of reporting function. It is similar to a browser-history. Blocke websites are marked in a different color.

Usability of the installation process: n/a
Usability of the configuration process: 1.9
Usability of the usage of the product: 1.4

Overall score for usability: 1.7 out of 4 points


K9 Web Protection mobile is an application, consists of a web browser that restricts users from visiting inappropriate sites. The filtering tool customization interface is accessible by the mobile device only (remote control is not possible). No customization is possible neither according to topic categories nor to keywords or black/white URLs lists. The complete lack of configurable settings, like customizing a user profile filter as compared to the PC tool, makes this app insufficient. The Safe Search is available but it is related to the K9 browser (not specifically to Google or Bing or Yahoo!). Important for iOS-User: In order to have the tool working, the embedded parental control for the iPhone/iPad must be set appropriately as indicated by K9 set-up instructions. The tool does not filters the websites accessed through the Safari browser provided by the iPhone: the access to the Safari browser must be blocked by the embedded parental control.


The low rate results from the possibility for the user to reach a blocked website through translation sites
Overall score for security: 1 out of 4 points


Area of needFunctionalitySpecific issuesAssessment
Management Management of User profiles Create several profiles No
Remote Management Manage on various devices No
Monitoring Remote access to monitoring No
Filtering Customisation Topics Customisation of Filtering Topics No
URLs White List Restrict Browsing to White List No
Default White List No
Modification OR Creation No
URLs Black List Creation of User's own Black List No
Keywords Keywords Default Black List No
Default White List No
Creation of a User's Black List No
Creation of a User's White List No
Time Time Limit Settings Set a specific time frame or web access duration No
Blocking Message Type Ask for unblocking by parents No
Redirect to safe resources No
Usage Restriction Web Block Access Yes
Monitor Access No
Safe search Availability Yes
Social Networks Block Access No
Monitor Usage No
Personal data Provision Block No
Streaming Block Access No
Monitor Access No
P2P Block the application No
Monitor Downloads No
Skype Block chat No
Block video chat No
Monitor No
Prevent new Contact No
Windows Life Messenger Block chat No
Block video chat No
Monitor No
Prevent new Contact No
Email Block email client and/or webmail access No


Yes / No
I: installation in 3 steps or lessYes
I: choice of installation for beginners or advanced usersn/a

C: different degrees of strength for the filteringNo
C: different content criteria for the filteringNo
C: option to transfer filter configurations between target usersn/a
C: option to transfer filter configurations between devicesNo
C: overall comprehensible configurationYes
C: overall conformity with user expectationsNo
C: overall easy to learnNo

U: alert message in a child friendly languageNo
U: option to customise the reaction in case of blockingNo
U: overall easily operable and comprehensible reportingn/a


The Tool prevents the user from by-passing the filter by:Yes / No
Using the IP address instead of the URLYes
Using an alternative browserYes
Changing time and date settings*n/a
Disabling or uninstalling the software without a password*Yes
Closing the filtering tool trough the Task Managern/a
Using a proxy instead of a direct connection to the InternetYes
Accessing the web-pages through the Google CacheYes
Reaching a website through translation sitesNo
Renaming a blocked applicationn/a
Using Safe Moden/a
Filtering Content personalised by userNo
Filtering Content evolving through timeNo
Filtering Multimedia contentNo
Filtering outbound contentNo

Funded by
Logo: EUEuropean Commission

Cybion Online Business Intelligence

Stiftung Digitale Chancen

coordinated by:
Innova - Technology Transfer and Valorisation

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