In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Abdullah Bin Abbaas [may Allah be pleased with him and his father] said: Abu Sufyan bin Harb informed me [i.e. about an incident that took place when he was not a Muslim] that Heraclius had sent a messenger to him while he had been accompanying a caravan from Quraish. They were merchants doing business in Sham (Syria, Palestine, Lebanon, and Jordan), at the time when Allah’s Apostle had a truce with Abu Sufyan and Quraish infidels. So Abu Sufyan and his companions went to Heraclius at Ilya (Jerusalem). Heraclius called them in the court and he had all the senior Roman dignitaries around him. He called for his translator who, translating Heraclius’s question said to them, “Who amongst you is closely related to that man who claims to be a Prophet?” Abu Sufyan replied, “I am the nearest relative to him (amongst the group).” Heraclius said, ‘Bring him [i.e. Abu Sufyan] close to me and make his companions stand behind him.” Abu Sufyan added, that Heraclius told his translator to tell my companions that he wanted to put some questions to me regarding that man (The Prophet) and that if I told a lie they (my companions) should contradict me.” Abu Sufyan added, “By Allah! Had I Not Been Afraid of my companions labelling me a liar, I would not have spoken the truth about him [i.e. The Prophet]. [Sahih Al-Bukhaari: Book of Revelation. Hadeeth umber 7]

Regarding Abu Sufyan’s statement: “By Allah! Had I not been afraid of my companions labelling me a liar, I would not have spoken the truth about him (i.e. The Prophet)”, Al-Haafidh Ibn Hajr stated in Fat-hul Baari that this shows that they (i.e. the pagan Arabs) used to abhor lying either due to what they followed from the previously revealed laws [i.e. the Shariah of Prophets Ibraaheem and Isma’eel] or it was something abhorred in their customs. [An Excerpt. For further details, see Fat-hul Baari]

Indeed, today we find that the liars have access to the vast means of communication. Read “The Danger of Lies And Its Evil Consequences, And Different Types of Liars” By Al-Allaamah Rabee Bin Haadee Al-Mad’khali [may Allah preserve him]:

The Danger of Lies And Its Evil Consequences, And Different Types of Liars – By Shaikh Rabee Bin Haadee