Herald Sun | Concrete bollards for Melbourne CBD to avoid car terror attack Herald Sun TEN potential terror targets in the CBD have been identified in a top secret government briefing. The Sunday Herald Sun can reveal security assessments say the sites are at risk of a car attack, prompting a rapid roll out of cement barriers. The ... Security upgrades for Melbourne's CBD Premier announces anti-terror bollards for Melbourne's CBD Concrete barriers installed around Melbourne in an anti-terror security blitz |