How can I protect development sites with Basic Auth module enabled?

You could check the handy box and click "Proceed anyway"... But I recommend you figure out why the site was blacklisted first.

The site could have been the victim of a hack and may very well be serving malware that the moment or the recent past. Such blacklists are usually cleared quickly once the site is restored.

If your DNS resolution has been messed with (like by malware you may have already contracted) you may not actually be going to the site you think you are. Try using a web based lookup service to resolve the IP and compare to the one you get from the nslookup command on your box.

It's not your Chrome, it's the Google safe browsing database which contains an entry for opengl.org:

Of the 22 pages we tested on the site over the past 90 days, 1 page(s) resulted in malicious software being downloaded and installed without user consent. The last time Google visited this site was on 2010-09-23, and the last time suspicious content was found on this site was on 2010-09-23.

Malicious software includes 1 exploit(s). Successful infection resulted in an average of 2 new process(es) on the target machine.

Malicious software is hosted on 1 domain(s), including hthexhe.co.cc/.

1 domain(s) appear to be functioning as intermediaries for distributing malware to visitors of this site, including dbkzbkz.co.cc/.

This site was hosted on 1 network(s) including AS21844 (THEPLANET).

Here is a sketch. First, here is the argument for untwisted homology that I want to base the argument for twisted homology off of. Every categorical thing I say below is $\infty$-categorical by default, e.g. every colimit is an $\infty$-colimit and so forth.

The untwisted $R$-homology spectrum of a space $X$ with coefficients in a ring spectrum $R$ is the colimit of the constant diagram $X \to \text{Mod}(R)$ with constant value $R$. Taking $R$-homology spectra defines a functor from spaces to $R$-module spectra which is itself cocontinuous (because colimits commute with colimits), and in particular which sends pushout squares to pushout squares. But $\text{Mod}(R)$, being stable, has the property that pushout squares are also pullback squares. A pullback square of $R$-module spectra can be converted into a fiber sequence of $R$-module spectra, and then we can apply the long exact sequence in homotopy.

The argument works essentially without modification for twisted $R$-homology, except that the domain category is no longer spaces but, say, pairs of a space $X$ and a local system of $R$-module spectra on $X$ (there is no particular reason to restrict our attention to local systems of $R$-lines). Again taking $R$-homology is a cocontinuous functor and hence again sends pushout squares to pushout squares, which again are also pullback squares.