Judiciary Law 487 is the ancient attorney deceit law.  It arose just years after the Magna Carta.  During the period between 1267 and today, attorneys have constantly been negotiating cases for their clients.  Here, in Wailes v Tel Networks USA, LLC  2014 NY Slip Op 02861 [116 AD3d 625]
April 24, 2014  Appellate Division, First Department  we see that there is absolute immunity for settlement negotiations, which can never be the basis of a JL 487 claim.

"The allegations of Snyder’s conduct in his representation of defendant Tel Networks USA, LLC during settlement discussions with plaintiff, which plaintiff characterizes as "overzealous and intimidating," do not state a cause of action under Judiciary Law § 487. The complaint alleges neither an intent to deceive nor "a chronic and extreme pattern of legal delinquency" that caused plaintiff a loss (Kaminsky v Herrick, Feinstein LLP, 59 AD3d 1, 13 [1st Dept 2008] [internal quotation marks omitted], lv denied 12 NY3d 715 [2009] Nason v Fisher, 36 AD3d 486, 487 [1st Dept 2007]). Moreover, the only allegations of wrongdoing refer to a settlement discussion had after Tel Networks commenced a legal proceeding, and that communication is absolutely privileged (see Wiener v Weintraub, 22 NY2d 330 [1968] Mosesson v Jacob D. Fuchsberg Law Firm, 257 AD2d 381, 382 [1st Dept 1999], lv denied 93 NY2d 808 [1999]). Concur—Sweeny, J.P., Acosta, Saxe, Manzanet-Daniels and Clark, JJ."