Nowadays everyone has a good internet speed via. Mobile Data, i think majority users in most of the countries use that only, may-be sometime you are low on Mobile Data or no network access, in such scenario you could use the Public Wifi.
Unfortunately, mobile cellular network can be also get hacked
I was actually searched if we could avoid such hacking but found some news about Signalling System 7 (SS7) protocols being vulnerable. https://www.vice.com/en_us/article/mbzvxv/criminals-hackers-ss7-uk-banks-metro-bank It not only hacks the internet but also our cellular network services sms, calls, etc.
Anyways, just had a look at your blog, it's nice..
PS: Looks like this Hatena Blog is a Japanese based blog service provider ?
Yep, one of my friends was using it and told me to try. I think I should've taken it to medium.