Hello, Isuldor! Welcome to Wikipedia! Thank you for your contributions. You may benefit from following some of the links below, which will help you get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are already excited about Wikipedia, you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field when making edits to pages. Happy editing! Peaceray (talk) 20:38, 28 March 2016 (UTC)[reply]
Please do not remove citations or information sourced through citations simply because a link to a source is not working, as you did to X.509. Dead links should not be deleted. Instead, please repair or replace the link, if possible, and ensure properly sourced information is retained. Often, a live substitute link can be found. Links not used as references, notes or citations are not as important, such as those listed in the "External links" or "Further reading" sections, but bad links in those sections should also be fixed if possible. Please take a look at the welcome page to learn more about contributing to this encyclopedia.
To mark a dead link, please use the {{Dead link}} template. Often someone else may come along & find an updated URL, an archived URL, or a new source. But subsequent editors will not know to do this if the dead link has not been labeled & instead removed.
In this case, an archived version of the link was available from web.archive.org. Archive parameters (archiveurl, archivedate, deadurl=[yes|no]) can be used with the {{cite web}} template.
Please do not remove citations or information sourced through citations simply because a link to a source is not working, as you did to X.509. Dead links should not be deleted. Instead, please repair or replace the link, if possible, and ensure properly sourced information is retained. Often, a live substitute link can be found. Links not used as references, notes or citations are not as important, such as those listed in the "External links" or "Further reading" sections, but bad links in those sections should also be fixed if possible. Please take a look at the welcome page to learn more about contributing to this encyclopedia.