It was also developed by the United States Navy and has been criticized for not being as secure as it claims it is. This should come as no surprise since the US military and agencies have a history of demanding backdoors in software, which just means more attack vectors for outsiders to sniff out.

I make no claims that commercial VPNs are more secure, but at least they have some level of interest in keeping their promises if people are paying them, whereas a free service does not carry the same incentive.

Pick your poison, I guess.