Some form submissions have garbage data

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Some form (created with the simple Form block) submissions have garbage for the text field data. Would turning on the captcha stop this if it is spam/bot? If it's not, what should I do and is there any chance the data can be recovered?

The data looks like:

Last Name http://qbhrknrcgygi.com/
First Name http://qbhrknrcgygi.com/
Middle http://qbhrknrcgygi.com/
Address (number and street) http://qbhrknrcgygi.com/
Apt. # http://qbhrknrcgygi.com/
City, State Zip Code (if other than Newark) lpfbyr@lrkiox.com
Phone Number lpfbyr@lrkiox.com
Cell Number http://qbhrknrcgygi.com/
E-mail Address http://qbhrknrcgygi.com/
Which elementary school district do you live within? Schilling Elementary
Do you wish to be contacted immediately? No
Comments or questions: FrVd5W gogkxqzbkjho, [url=http://fzoeejiqmgtz.com/]fzoeejiqmgtz[/url], [link=http://bmuraknugyru.com/]bmuraknugyru[/link],http://tsewbyrixdsp.com/

or, it looks like:

Last Name nzpTdkJTAQYJYYybsms
First Name ZgitecMovnyGOiA
Middle GbVOJtCSaEtemnuQa
Address (number and street) AvHiNljmk
Apt. # iZLANSpoJVhKEqsJhs
City, State Zip Code (if other than Newark) iPsTRsxCRZW
Phone Number SOIaTOwaC
Cell Number fbJZCHUT
E-mail Address BHHWfrwjtkjyIWMmJ
Which elementary school district do you live within? Kennedy Elementary
Do you wish to be contacted immediately? Yes
Comments or questions: Going to put this atrilce to good use now.

The first set I'm sure was a real person, the second set I'm not sure.
The form is a class sign-up and missing these peoples data and contact info is a huge problem. Any help would be greatly appreciated. The site ishttp://www.newarkcert.org.

Please! I need a clue!

I am not a designer, developer or anything remotely close but I have created a site for our community emergency response team which is entirely driven by volunteer hours. Classes, drills and outreach are all provided without city budget money so obviously there's no money for a professionally done website. The C5 guys are awsome for providing such a great product so without any prior knowledge about building a website...I did! Thanks!

 
Steevb replied on at Permalink Reply
Steevb
HI,

Your form is not validating the email, which is bad.

Try using the 'extended form' from the market place, its a great add on.

And yes you should use 'captcha'

The form data should be stored in the dashboard so delete want you don't want.

There are plenty of idiots out there so you may get some rubbish input.

If someone is serious they will fill in the form properly.

Hope that helped.