Peer to peer systems are vulnerable. 

From this point on, I'm against mutual fund investments, it's not for me as I understand how vulnerable we really are in mutual funds. 

Currently have 3 SFHs in our name that are rented- very vulnerable position. 

However, wouldn't that make me vulnerable if I make considerable improvement to property ?

Homelessness is a rising problem among seniors, a vulnerable population.

As a newbie, some scammers out there see you as vulnerable "mark" with a $ in your forehead.

Wage gains usually lag inflation and can be vulnerable.

People smell vulnerability, and it is a select few that will let it slide - humans are predators, and if you give off a weak impression you are going to be taken down the road. 

Now there's a concept, discover a vulnerability and leverage it for gain.

But some that I use and have likedAkismet to cut down on spammy commentsSEO Auto Linker awesomeAll in One SEO Pack for SEO naturallyBackUpWordPressBroken Link Checker but some people say it puts a load on your server, in your setting you can make it only run at certain times such as when you are signed into your adminComment LuvFast Secure Contact Form some people like other contacts forms but this one has built in captchaGrowMap Anti Spambot Plugin little check box to confuse botsTim Thumb Vulnerability Scanner helps to prevent a commonly used way for hackers to get inW3 Total CacheYet Another Related Post PluginThese are just a few I like and there are some for security that I did not mention that I use.