b'Upgrading securityQ. When did you last significantly upgrade your network security (e.g. firewall)?25% 2020 22.5% 2019Almost 20% of education institutions have not upgraded17.2% 2018 17.2% 2017their network security in over four years7.5% 2016 4.3% 2015Before 2015 - 6.5% 21'