Simon can you come up with a Viable List of Bad UA's more appropriate for 2013? MSIE1 blocked one of my members, so i deleted MSIE1 from the List.

Hi Toxic2, banning UAs is a personal thing, you have to choose which to ban or not, throughout this thread (and the other vb versions of this mod) there are lists, there's a maintained list of spiders a vb.com in a thread by Mosh so pretty much all of the crawlers will be listed there (a download from his site) and you just choose which you want to ban by unveiling their UA when they visit your site.

This Mod's default list is a pretty dog gone good list, but like Simon says it might not meet your needs. It depends on your target audience countries, your preferences, all that.

Removing MSIE1 is about the only thing that would definitely be recommended to remove from the old list for this mod. MSIE1 will block users on IE10 and IE11 (which means A LOT of users and growing daily). I haven't seen anything prior to IE5 try to access my sites in a long time, so removing MSIE1 should not negatively impact your site in any way either (but blocking IE10 & 11 will!).

As was mentioned above it is a personal choice on what you block. There are thousands of sites out there that don't block any and are doing just fine. You need to figure out what's important for your site. Being hit hundreds of times a day from bots from regions of the world you probably don't even cater too like China or countries of the former Soviet Union? or Blocking those bots and in turn reducing server load and load times for those users you do want to cater too?

For instance if you block IE6 (MSIE6) you will currently block over 20% of Chinese internet users (average everywhere else in the World is less than 1% using IE6). When you consider China has 1.3 billion people that is a lot of potential website traffic. At the same time China also accounted for nearly 40% of the world's computer hacking attack traffic during 2012. If you have content that is viable for Chinese users which can possibly turn into potential profit (sales / ad clicks) for you then blocking MSIE6 and chinese specific bots like baiduspider, iaskspider, sogou spider, Sosospider, YoudaoBot and others is probably not recommended.

There are plenty of good resources of information in this thread and other places on the net on useragents. Just remember copying someones elses useragent blocking list directly and not specifically taking a little time and tweaking it for your own needs is almost guaranteed to negatively impact your site traffic.

Here are a couple of additional resources:
http://www.useragentstring.com/pages/Crawlerlist/
http://www.user-agents.org/

I definitely agree with this.

If you really want to block MSIE1 then enter it exactly as that plus a leading space, if I remember rightly I've allowed it to accept spaces rather than ignore them, so doing it like that will not (or shouldn't) ban MSIE10.

I have similar problem, it might be solved now.

But anyway, just to ask it, what other than blocking MSIE 1 could block legitimate users in this list? If anyone knows:

Blocking IE 1-6 won't block any legitimate humans, it will block 90% of the botnet zombie computers out there.

Actually, if you use string "MSIE 1" it blocks users of MSIE 10 and 11, as product looks for string anywhere, not as a whole word. And, if I'm not mistaken, to block only MSIE 1, you should use string MSIE 1,0.

I had many regular users who couldn't reach my site, probably all of them use MSIE 10 or 11.

The developer covered that here.

But I agree with you, there's really no reason to have IE1 on the ban list, there very likely isn't a functioning computer anywhere that is also online, that runs it.

IE6 is the biggest botnet zombie browser though, and there are MILLIONS of them still online.