* Sound the alarm: Securitas Direct sold for $3.4 billion

* Duncan Watts: Why it’s so hard to predict bubbles

* Jim Finkle: Las Vegas welcomes the kiddie hacker convention

* Platinum parachute: For Southern Union execs, $470 million reasons to sell out

* Morning Call: U.S. futures point higher on Greek aid package, London rises early, European shares fall to 3-month low and the Nikkei climbs.

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* John Quelch: 5 myths about business in China

* UK law: Private equity firms get corruption clarity

* Dan Pallotta: A logo is not a brand

* Paul Krugman: When thinking about Greece, don’t cry for Argentina

* Only a matter of time: Comic book retailers hit by digital revolution

* Danny Sullivan: Definitive guide to anti-trust investigations against Google

* Don Tapscott: Will youth unemployment demonstrations come to America?