The famously grumpy Brazil coach effectively accused Portugal of being spoilsports for packing their defence and challenging Brazil to find a way through. Brazil failed and the result was a petulant, scrappy goalless draw.
"It was a difficult game, the Portuguese put everyone behind the halfway line," Dunga said. "Portugal's tactics were normal. Everyone takes extra precautions when they play Brazil."
Goalkeeper Julio Cesar echoed his coach's sentiments.
"It's turning into a tradition," he said. "All the teams who face Brazil shut up shop and try to exploit the counter-attack, because they know that our football culture is always to take the initiative."
Critics, however, say it's Dunga's own fault for packing his squad with midfield spoilers and refusing to take risks.
Dunga's team are extremely difficult to beat - they have won 18 of their last 21 matches - but depend on isolated moments of individual brilliance to win matches.
Although Dunga's team generally have an excellent record, some of Brazil's worst-ever performances -- including goalless home draws against Bolivia, Colombia and Venezuela in the World Cup qualifiers -- have come under his watch.
Monday's second round match against Chile offers an more encouraging panorama.
Chile are a team who like to pour forward, leaving plenty of spaces for Brazil's counter-attacking game.
Brazil have met their fellow South Americans five times under Dunga's leadership, winning them all.
They are the only two players will real spark in the Brazil squad and Kaka's absence especially was badly felt on Friday, especially by target man Luis Fabiano, whose supply lines dried up and was only noticed when he picked up a yellow card for a late tackle.
