But does Moz take this into account and Google say here there is no need?

https://www.searchenginejournal.com/gary-illyes-google-penguin-negative-seo-disavows/296609/

I have a site that I know was Domain Authority 35 but now Domain Authority 25 after someone sent a load of spam links to it, how can this be correct and how can I change it?

Is it worth doing a disavow and will moz take that into account?

Can any of you guys please help me I have alerts on links coming in and it looks like recently someone did this, it looks maliciously done as it is only our domain mentioned and most are brand new posts?

http://testosteroneclinicindenve53950.shotblogs.com/testosterone-clinic-in-denver-fundamentals-explained-6102386

http://claytondmnnp.ampedpages.com/Details-Fiction-and-testosterone-clinic-in-denver-16897309

http://vinylvehiclecarwrap38041.alltdesign.com/a-review-of-vinyl-vehicle-car-wrap-9574042

http://devinxccct.educationalimpactblog.com/1784474/little-known-facts-about-vinyl-vehicle-car-wrap

http://keeganbsftf.ka-blogs.com/7488539/how-vinyl-vehicle-car-wrap-can-save-you-time-stress-and-money

http://andybxoes.thezenweb.com/vinyl-vehicle-car-wrap-Fundamentals-Explained-17581028

http://kylerhfdzu.blogkoo.com/not-known-details-about-vinyl-vehicle-car-wrap-9029141

http://troyytkyn.timeblog.net/7695911/the-greatest-guide-to-vinyl-vehicle-car-wrap

http://waylontyzab.pointblog.net/testosterone-clinic-in-denver-Secrets-16335972

http://testosteroneclinicindenve30516.onesmablog.com/Top-testosterone-clinic-in-denver-Secrets-17252737

http://emiliogkmop.blogofoto.com/7667522/top-guidelines-of-testosterone-clinic-in-denver

http://caidenaczxt.blogs-service.com/7514172/testosterone-clinic-in-denver-fundamentals-explained

http://daltonpyfms.mybjjblog.com/5-simple-statements-about-testosterone-clinic-in-denver-explained-6517932

Should I try to disavow these and submit to google or will google know our site which has been up for 5 years is not doing this?

Should I do any of these

https://tehnoblog.org/google-webmaster-tools-my-website-got-bombed-with-backlinks-what-to-do/

No the site is fully built can you see any more problems? I was considering what tom has said about setting up a canonical tag for the tabs and this has confirmed it for me - thanks tom

We own this site http://www.discountstickerprinting.co.uk/ and just a little concerned as I right clicked open in new tab on the tab content section and it went to a new page

For example if you right click on the price tab and click open in new tab you will end up with the url
http://www.discountstickerprinting.co.uk/#tabThree

Does this mean that our content is being duplicated onto another page?

If so what should I do?

I think the problem with this strategy is that you are at a big disadvantage compared to building links direct to the page, if we take for example you blog - how many links are on the page, now divide 100 / number of links on the page and this is how much power (%) you will gain compared to building the link direct.

The big gain with building links to a blog is that it looks more natural and with the right content can be much easier than a product page to build links, but it should be part of an overall strategy like most things in SEO.