Watch out with unofficial sites claiming to let you download the proceedings for the Rapid Excavation and Tunneling Conference 2019.

In recent times some sites appeared, mostly from Russia (I mean with Russian domain names with .ru extension). They let you download the "proceedings". Even if they let you download the proceedings, most likely you will also be getting some computer virus. These files are downloaded mostly in PDF format, which is a preferred format for internet criminals.

Once you download it, your computer is likely to turn into a zombie computer spreading fake news, without you even noticing, as a part of Putin's massive disinformation network.

Russian or not. Just resist the temptation not to download any PDF files from unofficial sources.

Take care of yourselves in these difficult days.